Researchers find ancient Maya farms in Mexican wetlands

Archaeologists used the latest technology to find evidence suggesting ancient Maya people grew surplus crops to support an active trade with neighbors up and down the Yucatan Peninsula. The extensive croplands suggest the ancient Maya could grow surplus crops, especially the cotton responsible for the renowned textiles that were traded throughout Mesoamerica.

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Quantum optical cooling of nanoparticles

One important requirement to see quantum effects is to remove all thermal energy from the particle motion, i.e. to cool it as close as possible to absolute zero temperature. Researchers are now one step closer to reaching this goal by demonstrating a new method for cooling levitated nanoparticles.

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66-million-year-old deathbed linked to dinosaur-killing meteor

Paleontologists have found a fossil site in North Dakota that contains animals and plants killed and buried within an hour of the meteor impact that killed the dinosaurs 66 million years ago. This is the richest K-T boundary site ever found, incorporating insects, fish, mammals, dinosaurs and plants living at the end of the Cretaceous, mixed with tektites and rock created and scattered by the impact. The find shows that dinosaurs survived until the impact.

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Biophysicists use machine learning to understand, predict dynamics of worm behavior

Biophysicists have used an automated method to model a living system -- the dynamics of a worm perceiving and escaping pain. The model makes accurate predictions about the dynamics of the worm behavior, and these predictions are biologically interpretable and have been experimentally verified.

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Researchers discover the source of new neurons in brain's hippocampus

Researchers have shown, in mice, that one type of stem cell that makes adult neurons is the source of this lifetime stock of new cells in the hippocampus. These findings may help neuroscientists figure out how to maintain youthful conditions for learning and memory, and repair and regenerate parts of the brain after injury and aging.

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Seeds inherit memories from their mother

Seeds remain in a dormant state as long as environmental conditions are not ideal for germination. The depth of this sleep is inherited from their mother. Researchers reveal how this maternal imprint is transmitted through fragments of 'interfering' RNAs, which inactivate genes, and that a similar mechanism enables to transmit another imprint, that of the temperatures present during the development of the seed. This mechanism allows the seed to optimize the timing of its germination.

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Five new frog species from Madagascar

Scientists have named five new species of frogs found across the island of Madagascar. The largest could sit on your thumbnail, the smallest is hardly longer than a grain of rice.

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Saturn's rings coat tiny moons

New findings have emerged about five tiny moons nestled in and near Saturn's rings. The closest-ever flybys by NASA's Cassini spacecraft reveal that the surfaces of these unusual moons are covered with material from the planet's rings -- and from icy particles blasting out of Saturn's larger moon Enceladus. The work paints a picture of the competing processes shaping these mini-moons.

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Galápagos islands have nearly 10 times more alien marine species than once thought

Over 50 non-native species have found their way to the Galápagos Islands, almost 10 times more than scientists previously thought, reports a new study.

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The Serengeti-Mara squeeze -- One of the world's most iconic ecosystems under pressure

Increased human activity around one of Africa's most iconic ecosystems is 'squeezing the wildlife in its core', damaging habitation and disrupting the migration routes of wildebeest, zebra and gazelle, an international study has concluded.

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Deep groundwater may generate surface streams on Mars

New research suggests that deep groundwater could still be active on Mars and could originate surface streams in some near-equatorial areas on Mars.

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Designer organelles bring new functionalities into cells

For the first time, scientists have engineered the complex biological process of translation into a designer organelle in a living mammalian cell. Researchers used this technique to create a membraneless organelle that can build proteins from natural and synthetic amino acids carrying new functionality.

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Mass amphibian extinctions globally caused by fungal disease

An international study has found a fungal disease has caused dramatic population declines in more than 500 amphibian species, including 90 extinctions, over the past 50 years.

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Woman with novel gene mutation lives almost pain-free

A woman in Scotland can feel virtually no pain due to a mutation in a previously-unidentified gene, according to a research article. She also experiences very little anxiety and fear, and may have enhanced wound healing due to the mutation, which the researchers say could help guide new treatments for a range of conditions.

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Fur discoveries in Iron Age graves testify to respect for animals

Fur remains found in burial sites demonstrate the importance of hunting traditions in Iron Age Finland and Lapland all the way to the 17th century. According to a recently completed study, they speak of a relationship between humans and animals.

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Hubble watches spun-up asteroid coming apart

A small asteroid has been caught in the process of spinning so fast it's throwing off material, according to new data.

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New approach could boost energy capacity of lithium batteries

Researchers have found a new way to make cathodes for lithium batteries, offering improvements in the amount of power for both a given weight and a given volume.

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Eutrophication of lakes will significantly increase greenhouse gas emissions

The greening or eutrophication of the world's lakes will increase the emission of methane into the atmosphere by 30 to 90 percent during the next 100 years, say researchers. This increased methane emission is equivalent to 18-33 percent of annual carbon dioxide emissions from burning fossil fuels. Limiting lake greening is important to preserve fragile water supplies and to avoid acceleration of climate change.

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Codifying the universal language of honey bees

In a paper appearing in April's issue of Animal Behaviour researchers decipher the instructive messages encoded in the insects' movements, called waggle dances.

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Artificial intelligence can predict premature death, study finds

Computers which are capable of teaching themselves to predict premature death could greatly improve preventative healthcare in the future, a new study suggests

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Arctic warming contributes to drought

According to new research, changes similar to those after the ice age 10,000 years ago could be in store today because a warming Arctic weakens the temperature difference between the tropics and the poles. This, in turn, results in less precipitation, weaker cyclones and weaker mid-latitude westerly wind flow -- a recipe for prolonged drought.

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Data flows from NASA's TESS Mission, leads to discovery of Saturn-sized planet

Astronomers who study stars have contributed to the analysis of a planet discovered by NASA's new TESS Mission. It's the first planet identified by TESS for which the oscillations -- 'starquakes' -- of the planet's host star could be measured.

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Rivers raged on Mars late into its history

Scientists have catalogued these rivers to conclude that significant river runoff persisted on Mars later into its history than previously thought. According to the study, the runoff was intense -- rivers on Mars were wider than those on Earth today -- and occurred at hundreds of locations on the red planet.

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Lying, sitting or standing: Resting postures determined by animals' size

Cows always lie on their chests so that their digestion is not impaired. Rodents sometimes rest sitting down, while kangaroos sometimes lie on their backs. The larger the animal, the less often it lies down, and when it does, it is more likely to lie on its side - but there are exceptions.

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People 'hear' flashes due to disinhibited flow of signals around the brain, suggests study

A synaesthesia-like effect in which people 'hear' silent flashes or movement, such as in popular 'noisy GIFs' and memes, could be due to a reduction of inhibition of signals that travel between visual and auditory areas of the brain, according to a new study. It was also found that musicians taking part in the study were significantly more likely to report experiencing visual ear than non-musician participants.

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वाह मां बेटी ने मिल कर उड़ाया एक ही यात्री विमान

अमेरिका में रहने वाली मां बेटी जो पेशेवर पायलट हैं और एक ही एयर लाइंस के साथ काम करती हैं हाल में एक ही यात्री विमान की उड़ान का दायित्व संभालती देखी गईं।

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New brain research challenges our understanding of sleep

A new study has uncovered the large-scale brain patterns and networks in the brain which control sleep, providing knowledge which in the future may can in the long term help people who experience problems sleeping.

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Discovery of life-extension pathway in worms demonstrates new way to study aging

An enzyme-blocking molecule can extend the lifespan of Caenorhabditis elegans roundworms by as much as 45 percent, largely by modulating a cannabinoid biological pathway, according to a new study.

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In hunt for life, astronomers identify most promising stars

NASA's new Transiting Exoplanet Survey Satellite (TESS) is designed to ferret out habitable exoplanets, but with hundreds of thousands of sunlike and smaller stars in its camera views, which of those stars could host planets like our own? A team of astronomers has identified the most promising targets for this search.

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Widespread losses of pollinating insects in Britain

Many insect pollinator species are disappearing from areas of Great Britain, a new study has found. Research showed one third of wild pollinator species experienced declines in terms of areas in which they were found, while one tenth increased.

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Artificial womb technology breaks its 4 minute mile

A major advancement in pioneering technology based around the use of an artificial womb to save extremely premature babies is being hailed as a medical and biotechnological breakthrough.

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Venus flytrap 'teeth' form a 'horrid prison' for medium-sized prey

Researchers investigate the importance of marginal spikes, the 'teeth' lining the outer edge of the plant's snap traps, in successfully capturing prey.

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Yellowstone elk don't budge for wolves, say scientists

Elk roam the winter range that straddles the northern boundary of Yellowstone National Park with little regard for wolves, according to a new study illustrating how elk can tolerate living in close proximity to the large predator.

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Ancient Caribbean children helped with grocery shopping in AD 400

Researchers have long thought that snail and clam shells found at Caribbean archaeological sites were evidence of 'starvation food' eaten in times when other resources were lacking. Now, a study suggests these shells may be evidence of children helping with the grocery shopping -- AD 400 style.

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Listening to the quantum vacuum

Since the historic finding of gravitational waves from two black holes colliding over a billion light years away was made in 2015, physicists are advancing knowledge about the limits on the precision of the measurements that will help improve the next generation of tools and technology used by gravitational wave scientists. Physicists have now measured quantum ''back action'' in the audio band at room temperature.

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Deep time tracking devices: Fossil barnacles reveal prehistoric whale migrations

Long-distance migrations are common for large whales, but when in their evolutionary past did whales begin to migrate and why? Scientists looked for these answers in fossil whale barnacles.

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Earth's deep mantle flows dynamically

As ancient ocean floors plunge over 1,000 km into the Earth's deep interior, they cause hot rock in the lower mantle to flow much more dynamically than previously thought, finds a new study. The discovery answers long-standing questions on the nature and mechanisms of mantle flow in the inaccessible part of deep Earth. This is key to understanding how quickly Earth is cooling, and the dynamic evolution of our planet and others in the solar system.

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New virtual reality tool allows you to see the world through the eyes of a tiny primate

Imagine that you live in the rainforests of Southeast Asia, you're a pint-sized primate with enormous eyes and you look a little like Gizmo from the movie, 'Gremlins.' You're a tarsier -- a nocturnal animal whose giant eyes provide you with exceptional visual sensitivity, enabling a predatory advantage. A new virtual reality (VR) software, Tarsier Goggles, simulates a tarsier's vision and illustrates the adaptive advantage of this animal's oversized eyes.

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Traffic control of cells

Researchers develop a hydrogel whose stiffness and permeability to cells can be controlled with light.

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Matter waves and quantum splinters

Physicists have shown that shaking ultracold Bose-Einstein condensates can cause them to either divide into uniform segments or shatter into unpredictable splinters, depending on the frequency of the shaking.

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Scientist constructs artificial photosynthetic cells

Scientists build artificial cells as models of primitive cells. Research team have constructed artificial cells using minimal components that are able to supply energy to drive gene expression inside a microcompartment, thus these artificial cells can produce energy that helps synthesize parts of the cells themselves. This work marks an important milestone in constructing artificial autotrophic cells, and may shed light on how primordial cells used sunlight as an energy source early in life's history.

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Icy giant planets in the laboratory

Giant planets like Neptune may contain much less free hydrogen than previously assumed. Researchers drove shock waves through two different types of plastic to reach the same temperatures and pressures present inside such planets, and observed the behavior using ultra-strong X-ray laser pulses. Unexpectedly, one of these plastics kept its crystalline structure even at the most extreme pressures. Since the icy giant interiors are made up of the same components as the plastic, planetary models may need to be partially reconsidered.

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Overland migration of Arctic Terns revealed

Data from a landmark three year study of the world's longest migrating seabird reveals how overland migration is an integral part of their amazing journey.

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Bacteria may travel thousands of miles through the air globally

Bacteria may travel thousands of miles through the air worldwide instead of hitching rides with people and animals, according to scientists. Their 'air bridge' hypothesis could shed light on how harmful bacteria share antibiotic resistance genes.

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सोशल मीडिया पर हवा में लटक कर चिड़िया का शिकार करते अजगर का वीडियो

लोगों को अजीबो गरीब वीडियो बनाने का शौक होता है उसी का नमूना है पिछले दिनो वायरल हुआ चिड़िया का शिकार करते अजगर का वीडियो।

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तौबा एक या दो नहीं इस घर में निकले पूरे 45 सांप

आपको पता चल जाए कि घर में एक सांप आ गया है तो जब तक वो निकल ना जाए अंदर जाने की हिम्मत नहीं होगी पर तब क्या हो जब 45 सांपों की मौजूदगी का पता भी ना चले।

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How electricity-eating microbes use electrons to fix carbon dioxide

A phototrophic microbe called Rhodopseudomonas palustris takes up electrons from conductive substances like metal oxides or rust to reduce carbon dioxide.

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New light on origins of modern humans

The work confirms a dispersal of Homo sapiens from southern to eastern Africa immediately preceded the out-of-Africa migration.

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Paleontologists report world's biggest Tyrannosaurus rex

Paleontologists have just reported the world's biggest Tyrannosaurus rex and the largest dinosaur skeleton ever found in Canada. The 13-metre-long T. rex, nicknamed 'Scotty,' lived in prehistoric Saskatchewan 66 million years ago.

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Jupiter's unknown journey revealed

The giant planet Jupiter was formed four times further from the sun than its current orbit, and migrated inwards in the solar system over a period of 700,000 years. Researchers found proof of this incredible journey thanks to a group of asteroids close to Jupiter.

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4D-printed materials can be stiff as wood or soft as sponge

Imagine smart materials that can morph from being stiff as wood to as soft as a sponge - and also change shape. Rutgers University-New Brunswick engineers have created flexible, lightweight materials with 4D printing that could lead to better shock absorption, morphing airplane or drone wings, soft robotics and tiny implantable biomedical devices.

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Inert nitrogen forced to react with itself

Direct coupling of two molecules of nitrogen: chemists have achieved what was thought to be impossible. This new reaction opens new possibilities for one of the most inert molecules on earth.

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High-fructose corn syrup boosts intestinal tumor growth in mice

Consuming a daily modest amount of high-fructose corn syrup -- the equivalent of people drinking about 12 ounces of a sugar-sweetened beverage daily -- accelerates the growth of intestinal tumors in mouse models of the disease, independently of obesity, according to new research.

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Dynamic hydrogel used to make 'soft robot' components and LEGO-like building blocks

A new type of hydrogel material could soon make assembling complex microfluidic or soft robotic devices as simple as putting together a LEGO set.

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Kicking neural network automation into high gear

Algorithm designs optimized machine-learning models up to 200 times faster than traditional methods.

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True-meaning wearable displays: Self-powered, washable and wearable

When we think about clothes, they are usually formed with textiles and have to be both wearable and washable for daily use; however, smart clothing has had a problem with its power sources and moisture permeability, which causes the devices to malfunction. This problem has now been overcome by a research team, who developed a textile-based wearable display module technology that is washable and does not require an external power source.

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Ancient birds out of the egg running

Using their own laser imaging technology, scientists have determined the lifestyle of a special hatchling bird by revealing the previously unknown feathering preserved in the fossil specimen found in the ~125 million-year-old Early Cretaceous fossil beds of Los Hoyas, Spain.

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Medicine and personal care products may lead to new pollutants in waterways

When you flush the toilet, you probably don't think about the traces of the medicine and personal care products in your body that are winding up in sewage treatment plants, streams, rivers, lakes, bays and the ocean. But scientists have found that bacteria in sewage treatment plants may be creating new contaminants that have not been evaluated for potential risks and may affect aquatic environments.

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Engineers demonstrate metamaterials that can solve equations

Engineers have designed a metamaterial device that can solve integral equations. The device works by encoding parameters into the properties of an incoming electromagnetic wave; once inside, the device's unique structure manipulates the wave in such a way that it exits encoded with the solution to a pre-set integral equation for that arbitrary input.

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Hundreds of bubble streams link biology, seismology off Washington's coast

The first survey of methane vent sites off Washington's coast finds 1,778 bubble columns, with most located along a north-south band that is in line with a geologic fault.

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In a new quantum simulator, light behaves like a magnet

Physicists propose a new 'quantum simulator': a laser-based device that can be used to study a wide range of quantum systems. Studying it, the researchers have found that photons can behave like magnetic dipoles at temperatures close to absolute zero, following the laws of quantum mechanics. The simple simulator can be used to better understand the properties of complex materials under such extreme conditions.

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Physicists reveal why matter dominates our universe

Physicists have confirmed that matter and antimatter decay differently for elementary particles containing charmed quarks.

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How team sports change a child's brain

Adult depression has long been associated with shrinkage of the hippocampus, a brain region that plays an important role in memory and response to stress. Now, new research has linked participation in team sports to larger hippocampal volumes in children and less depression in boys ages 9 to 11.

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World's smallest bears' facial expressions throw doubt on human superiority

The world's smallest bears can exactly mimic another bear's facial expressions, casting doubt on humans and other primates' supremacy at this subtle form of communication. It is the first time such exact facial mimicry has been seen outside of humans and gorillas.

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Evidence for a Human Geomagnetic Sense

Scientists develop a robust experiment that shows human brain waves respond to changes in Earth-strength magnetic fields.

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Giant X-ray 'chimneys' are exhaust vents for vast energies produced at Milky Way's center

At the center of our galaxy, where an enormous black hole blasts out energy as it chows down on interstellar detritus while neighboring stars burst to life and explode. astronomers have discovered two exhaust channels -- dubbed the 'galactic center chimneys' -- that appear to funnel matter and energy away from the cosmic fireworks.

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Computer scientists create reprogrammable molecular computing system

Researchers have designed self-assembling DNA molecules with unprecedented reprogrammability.

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The best topological conductor yet: Spiraling crystal is the key to exotic discovery

A team of researchers has discovered the strongest topological conductor yet, in the form of thin crystal samples that have a spiral-staircase structure.

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Robotic 'gray goo'

Researchers have demonstrated for the first time a way to make a robot composed of many loosely coupled components, or 'particles.' Unlike swarm or modular robots, each component is simple, and has no individual address or identity. In their system, which the researchers call a 'particle robot,' each particle can perform only uniform volumetric oscillations (slightly expanding and contracting), but cannot move independently.

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Butterfly numbers down by two thirds

Meadows adjacent to high-intensity agricultural areas are home to less than half the number of butterfly species than areas in nature preserves. The number of individuals is even down to one-third of that number.

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It's spring already? Physics explains why time flies as we age

Researchers have a new explanation for why those endless days of childhood seemed to last so much longer than they do now -- physics. According to the theory, the apparent temporal discrepancy can be blamed on the ever-slowing speed at which images are obtained and processed by the human brain as the body ages.

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Evidence rogue waves are getting more extreme

Research suggests that 'rogue' waves are occurring less often, but becoming more extreme. Scientists have, for the first time, used long-term data from a wide expanse of ocean to investigate how these rare, unexpected and hazardous ocean phenomena behave.

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एक बेघर ने मांगी मदद तो अजनबी युवक ने दे दिया पिन सहित अपना एटीएम कार्ड

सोशल मीडिया पर एक दिल को छू लेने वाला वीडियो वायरल हो रहा है जिसमें एक बेघर आदमी एक अजनबी को बैंक कार्ड लौटाता दिखाई पड़ रहा है ये कार्ड खुद अजनबी ने उसे दिया था।

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The rise and fall of Ziggy star formation and the rich dust from ancient stars

Researchers have detected a radio signal from abundant interstellar dust in MACS0416_Y1, a galaxy 13.2 billion light-years away in the constellation Eridanus. Standard models can't explain this much dust in a galaxy this young, forcing us to rethink the history of star formation. Researchers now think MACS0416_Y1 experienced staggered star formation with two intense starburst periods 300 million and 600 million years after the Big Bang with a quiet phase in between.

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Tiny song bird makes record migration

The bird's trek between its breeding grounds in the central and western boreal forest of North America and its winter home in the Amazon Basin is one of the longest songbird migrations recorded. Describing a route arcing across North America and including a transoceanic flight to South America, the study confirms an epic migration journey that scientists had long suspected but not yet proved. Tracking their route is key to solving the birds' decline.

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Speeding the development of fusion power to create unlimited energy on Earth

A detailed examination of the challenges and tradeoffs in the development of a compact fusion facility with high-temperature superconducting magnets.

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Weird, wild gravity of asteroid Bennu

New research is revealing the Alice in Wonderland-like physics that govern gravity near the surface of the asteroid Bennu.

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NASA's Fermi Satellite clocks 'cannonball' pulsar speeding through space

Astronomers have found a runaway pulsar hurtling through space at nearly 2.5 million miles an hour -- so fast it could travel the distance between Earth and the Moon in just 6 minutes.

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Natural selection favors cheaters

Natural selection predicts that mutualisms -- interactions between members of different species that benefit both parties -- should fall apart. Individuals that gain from the cooperation of others but do not reciprocate (so-called cheaters) should arise and destabilize mutualisms. Yet to date, surprisingly little evidence of such cheating or destabilization exists. A team of biologists has now found strong evidence of this cheating.

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Water-bearing minerals on asteroid Bennu

Astronomers have discovered evidence of abundant water-bearing minerals on the surface of the near-Earth asteroid (101955) Bennu. Using early spectral data from NASA's OSIRIS-REx spacecraft orbiting the asteroid, the team identified infrared properties similar to those in a type of meteorite called carbonaceous chondrites.

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Hayabusa2 probes asteroid Ryugu for secrets

The first data received from the Hayabusa2 spacecraft in orbit of asteroid Ryugu helps space scientists explore conditions in the early solar system. The space probe gathered vast amounts of images and other data which gives researchers clues about Ryugu's history, such as how it may have formed from a larger parent body. These details in turn allow researchers to better estimate quantities and types of materials essential for life that were present as Earth formed.

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First Anatolian farmers were local hunter-gatherers that adopted agriculture

An international team has analyzed eight prehistoric individuals, including the first genome-wide data from a 15,000-year-old Anatolian hunter-gatherer, and found that the first Anatolian farmers were direct descendants of local hunter-gatherers. These findings provide support for archaeological evidence that farming was adopted and developed by local hunter-gatherers, rather than being introduced by a large movement of people from another area. Interestingly, the study also indicates a pattern of genetic interactions with neighboring groups.

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Levitating objects with light

Specially designed materials enable objects of different sizes to be levitated and manipulated with light, thanks to new research.

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Study finds test of protein levels in the eye a potential predictor of (future) Alzheimer's disease

Low levels of amyloid-beta and tau proteins, biomarkers of Alzheimer's disease, in eye fluid were significantly associated with low cognitive scores, according to a new study. These findings indicate that proteins in the eye may be a potential source for an accessible, cost-effective test to predict future Alzheimer's disease.

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Researchers discover new material to help power electronics

Scientists have discovered a way to simplify how electronic devices use those electrons -- using a material that can serve dual roles in electronics, where historically multiple materials have been necessary.

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Researchers create hydrogen fuel from seawater

Splitting water into hydrogen and oxygen presents an alternative to fossil fuels, but purified water is a precious resource. A team has now developed a way to harness seawater -- Earth's most abundant source -- for chemical energy.

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Mammals' unique arms started evolving before the dinosaurs existed

One of the things that makes mammals special is our diverse forelimbs -- bat wings, whale flippers, gibbon arms, and cheetah legs have evolved to do different, specialized tasks. Scientists wanted to see where this mammalian trait started evolving, so they examined fossils from early mammal relatives to see when the upper arm bones started diversifying. They discovered that the trait took root 270 million years ago -- 30 million years before the earliest dinosaurs existed.

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Prenatal testosterone linked to long-term effects in females who share womb with male twin

Women who shared their mother's womb with a male twin are less likely to graduate from high school or college, have earned less by their early 30s, and have lower fertility and marriage rates when compared with twins who are both female, according to new research.

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Scientists hunt down the brain circuit responsible for alcohol cravings

Scientists have found that they can reverse the desire to drink in alcohol-dependent rats -- with the flip of a switch. The researchers were able to use lasers to temporarily inactivate a specific neuronal population, reversing alcohol-seeking behavior and even reducing the physical symptoms of withdrawal.

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When it comes to monarchs, fall migration matters

New research shows that a critical piece of the butterfly's annual cycle was missing -- the fall migration.

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Alligator study reveals insight into dinosaur hearing

A biologist finds alligators build neural maps of sound the way birds do, suggesting the hearing strategy existed in their common ancestor, the dinosaurs.

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Supercrystal: A hidden phase of matter created by a burst of light

'Frustration' plus a pulse of laser light resulted in a stable 'supercrystal.'

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Rukwa Rift Basin Project names new Cretaceous mammal from East African Rift System

Researchers announced a new species of mammal from the Age of Dinosaurs, representing the most complete mammal from the Cretaceous Period of continental Africa, and providing tantalizing insights into the past diversity of mammals on the planet.

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Water-resistant electronic skin with self-healing abilities created

Inspired by jellyfish, researchers have created an electronic skin that is transparent, stretchable, touch-sensitive, and repairs itself in both wet and dry conditions. The novel material has wide-ranging uses, from water-resistant touch screens to soft robots aimed at mimicking biological tissues.

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Trembling aspen leaves could save future Mars rovers

Researchers have been inspired by the unique movement of trembling aspen leaves, to devise an energy harvesting mechanism that could power weather sensors in hostile environments and could even be a back-up energy supply that could save and extend the life of future Mars rovers.

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Earliest known Mariner's Astrolabe research

Guinness World Records have independently certified an astrolabe excavated from the wreck site of a Portuguese Armada Ship that was part of Vasco da Gama's second voyage to India in 1502-1503 as the oldest in the world, and have separately certified a ship's bell (dated 1498) recovered from the same wreck site also as the oldest in the world.

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World's oldest semen still viable

Ram semen stored for 50 years has been used to successfully impregnate 34 ewes, with fertility rates as high as recently stored semen.

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Seeing through a robot's eyes helps those with profound motor impairments

An interface system that uses augmented reality technology could help individuals with profound motor impairments operate a humanoid robot to feed themselves and perform routine personal care tasks such as scratching an itch and applying skin lotion. The web-based interface displays a 'robot's eye view' of surroundings to help users interact with the world through the machine.

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Tectonics in the tropics trigger Earth's ice ages

Over the last 540 million years, the Earth has weathered three major ice ages -- periods during which global temperatures plummeted, producing extensive ice sheets and glaciers that have stretched beyond the polar caps. Now scientists have identified the likely trigger for these ice ages.

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With single gene insertion, blind mice regain sight

People left blind by retinal degeneration have one option: electronic eye implants. Neuroscientists have now developed an alternative: gene therapy that, in tests, restored vision in blind mice. A gene for green opsin delivered via virus gave blind mice enough sight to discern patterns on an iPad at a resolution sufficient for humans to read. Given existing AAV eye therapies already approved, this new therapy could be ready for clinical trials in three years.

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Pests and the plant defenses against them drive diversity in tropical rainforests

Researchers have been baffled by tropical rainforest diversity for over a century; 650 different tree species can exist in an area covering two football fields, yet similar species never grow next to each other. It seems like it's good to be different than your neighbors, but why?

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Unique diversity of the genetic history of the Iberian Peninsula revealed by dual studies

Researchers have analyzed ancient DNA from almost 300 individuals from the Iberian Peninsula, spanning more than 12,000 years. The first study looked at hunter-gatherers and early farmers living in Iberia between 13,000 and 6,000 years ago. The second looked at individuals from the region over the last 8000 years. Together, the two papers greatly increase our knowledge about the population history of this unique region.

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Exotic 'second sound' phenomenon observed in pencil 'lead'

At relatively balmy temperatures, heat behaves like sound when moving through graphite, study reports.

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Study uncovers genetic switches that control process of whole-body regeneration

Researchers are shedding new light on how animals perform whole-body regeneration, and uncovered a number of DNA switches that appear to control genes used in the process.

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Ocean sink for human-made CO2 measured

Scientists have determined the amount of human-made CO2 emissions taken up by the ocean between 1994 and 2007.

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Bacteria may help frogs attract mates

The role played by symbiotic microorganisms isolated from the skin of anurans has been discovered by researchers in Brazil.

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Brain wave stimulation may improve Alzheimer's symptoms

By exposing mice to a unique combination of light and sound, neuroscientists have shown they can improve cognitive and memory impairments similar to those seen in Alzheimer's patients.

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Sea otters' tool use leaves behind distinctive archaeological evidence

Researchers have analyzed the use by sea otters of large, shoreline rocks as 'anvils' to break open shells, as well as the resulting shell middens. The researchers used ecological and archaeological approaches to identify patterns that are characteristic of sea otter use of such locations. By looking at evidence of past anvil stone use, scientists could better understand sea otter habitat use.

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Wild African ape reactions to novel camera traps

An international team of researchers analyzed video from remote camera-trap devices placed in ape-populated forests throughout Africa to see how wild apes would react to these unfamiliar objects. Responses varied by species, and even among individuals within the same species, but one thing was consistent throughout: the apes definitely noticed the cameras.

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Wolves lead, dogs follow -- And both cooperate with humans

The statement is a bold one, especially as wolves have received a lot of negative attention in recent years. A recent study conducted by behavioral researchers, however, shows that dogs and wolves both work equally well with humans, albeit in different ways. The allegedly unequal brothers are thus much more similar than often assumed.

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Researchers reverse the flow of time on IBM's quantum computer

Researchers have managed to return a computer briefly to the past. The results suggest new paths for exploring the backward flow of time in quantum systems. They also open new possibilities for quantum computer program testing and error correction.

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Changes in rat size reveal habitat of 'Hobbit' hominin

A study of rat body sizes shifting over time gives a glimpse into the habitat of the mysterious hominin Homo floresiensis -- nicknamed the 'Hobbit' due to its diminutive stature.

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Potential cystic fibrosis treatment uses 'molecular prosthetic' for missing lung protein

An approved drug normally used to treat fungal infections could also do the job of a protein channel that is missing or dysfunctional in the lungs of people with cystic fibrosis, operating as a prosthesis on the molecular scale, says new research.

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Testing the symmetry of space-time by means of atomic clocks

According to Einstein the speed of light is always the same. But according to theoretical models of quantum gravitation, this uniformity of space-time does not apply to particles. Physicists have now tried to detect a change in the uniformity of space-time using two optical Ytterbium clocks.

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Review of noise impacts on marine mammals yields new policy recommendations

Marine mammals are particularly sensitive to noise pollution because they rely on sound for so many essential functions, including communication, navigation, finding food, and avoiding predators. An expert panel has now published a comprehensive assessment of the available science on how noise exposure affects hearing in marine mammals, providing scientific recommendations for noise exposure criteria that could have far-reaching regulatory implications.

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Inactive ingredients in pills and capsules may cause allergic, adverse reactions

The majority of oral medications available to consumers contain ingredients that can affect sensitive individuals.

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Nano-bot can probe inside human cells

Researchers have built a set of magnetic 'tweezers' that can position a nano-scale bead inside a human cell with unprecedented precision. The nano-bot has already been used to study the properties of cancer cells, and could lead to enhanced diagnosis and treatment.

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Prehistoric Britons rack up food miles for feasts near Stonehenge

Archaeologists have unearthed evidence of the earliest large-scale celebrations in Britain - with people and animals traveling hundreds of miles for prehistoric feasting rituals. The study is the most comprehensive to date and examined the bones of 131 pigs, the prime feasting animals, from four Late Neolithic complexes. Serving the world-famous monuments of Stonehenge and Avebury, the four sites hosted the very first pan-British events.

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At 3,836 mph, which way does the air flow?

Aerospace engineers extend classical kinetic theory into high-speed aerodynamics, including hypersonic speed, which begins at 3,836 mph or roughly five times the speed of sound. The new study attempt to solve long-standing problems associated with high-speed aerodynamics.

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ALMA observes the formation sites of solar-system-like planets

Researchers have spotted the formation sites of planets around a young star resembling our sun. Two rings of dust around the star, at distances comparable to the asteroid belt and the orbit of Neptune in our solar system, suggest that we are witnessing the formation of a planetary system similar to our own.

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Astronomers discover 83 supermassive black holes in the early universe

Astronomers have discovered 83 quasars powered by supermassive black holes that were formed when the universe was only 5 percent of its current age.

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Dramtic rainfall changes for key crops predicted even with reduced greenhouse gas emissions

Even if humans radically reduce greenhouse gas emissions soon, important crop-growing regions of the world can expect changes to rainfall patterns by 2040. In fact, some regions are already experiencing new climatic regimes compared with just a generation ago. The study warns that up to 14 percent of land dedicated to wheat, maize, rice and soybean will be drier, while up to 31 percent will be wetter.

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Light provides control for 3D printing with multiple materials

Scientists have developed a novel 3D printer that uses patterns of visible and ultraviolet light to dictate which of two monomers are polymerized to form a solid material. Different patterns of light provide the spatial control necessary to yield multi-material parts.

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Researchers uncover additional evidence for massive solar storms

Solar storms can be far more powerful than previously thought. A new study has found evidence for the third known case of a massive solar storm in historical times. The researchers believe that society might not be sufficiently prepared if a similar event were to happen now.

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From Stone Age chips to microchips: How tiny tools may have made us human

Anthropologists have long made the case that tool-making is one of the key behaviors that separated our human ancestors from other primates. A new article, however, argues that it was not tool-making that set hominins apart -- it was the miniaturization of tools.

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What scientists found after sifting through dust in the solar system

Two recent studies report discoveries of dust rings in the inner solar system: a dust ring at Mercury's orbit, and a group of never-before-detected asteroids co-orbiting with Venus, supplying the dust in Venus' orbit.

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Meet India's starry dwarf frog, lone member of newly discovered ancient lineage

The starry dwarf frog is an expert hider. Plunging into leaf litter at the slightest disturbance, it has successfully evaded attention for millions of years -- until now. The thumbnail-sized species, now named Astrobatrachus kurichiyana, was discovered in India's Western Ghats. It's the sole member of an ancient lineage, a long branch on the frog tree of life that researchers have classified as a new subfamily, Astrobatrachinae.

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Coal power stations disrupt rainfall: Global study

Modern coal-fired power stations produce more ultrafine dust particles than road traffic and can even modify and redistribute rainfall patterns, a new 15-year international study shows. The study indicates filtration systems on modern coal-fired power stations are the biggest source of ultrafine particles and can have considerable impacts on climate in several ways.

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Movie technology inspires wearable liquid unit that aims to harvest energy

Engineers have created wearable technology to convert mechanical energy into electrical energy. The team invented a liquid-metal-inclusion based triboelectric nanogenerator, called LMI-TENG.

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Forgetting uses more brain power than remembering

Choosing to forget something might take more mental effort than trying to remember it, researchers discovered through neuroimaging.

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Mobile devices don't reduce shared family time

The first study of the impact of digital mobile devices on different aspects of family time in the UK has found that children are spending more time at home with their parents rather than less -- but not in shared activities such as watching TV and eating. The increase is in what is called 'alone-together' time, when children are at home with their parents but say they are alone.

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A robotic leg, born without prior knowledge, learns to walk

Researchers believe they have become the first to create an AI-controlled robotic limb driven by animal-like tendons that can even be tripped up and then recover within the time of the next footfall, a task for which the robot was never explicitly programmed to do.

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Teenage T. rex was already chomping on prey

New research indicates that even as a teenager the Tyrannosaurus rex showed signs that it would grow up to be a ferocious predator. Scientists reported evidence that a juvenile T. rex fed on a large plant-eating dinosaur, even though it lacked the bone-crushing abilities it would develop as an adult.

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Genes that evolve from scratch expand protein diversity

A new study challenges one of the classic assumptions about how new proteins evolve. The research shows that random, noncoding sections of DNA can quickly evolve to produce new proteins.

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Few pathways to an acceptable climate future without immediate action

A new comprehensive study of climate change has painted over 5 million pictures of humanity's potential future, and few foretell an Earth that has not severely warmed. But with immediate action and some luck, there are pathways to a tolerable climate future, according to a research team.

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Palaeolithic art featuring birds and humans discovered

A new article tells how researchers found -- in the site of Hort de la Bequera (Margalef de Montsant, Priorat) -- an artistic piece from 12,500 years ago in which humans and birds try to interact in a pictorial scene with exceptional traits: figures seem to star a narration on hunting and motherhood.

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Ancient records prompt rethink of animal evolution timeline

Scientists are rethinking a major milestone in animal evolution, after gaining fresh insights into how life on Earth diversified millions of years ago.

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How to train your robot (to feed you dinner)

Researchers have developed a robotic system that can feed people who need someone to help them eat.

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Kepler Space Telescope's first exoplanet candidate confirmed

An international team of astronomers announced the confirmation of the first exoplanet candidate identified by NASA's Kepler Mission.

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Massive twin star discovered snuggling close to its stellar sibling

Astronomers have discovered a binary star system with the closest high-mass young stellar objects ever measured, providing a valuable 'laboratory' to test theories on high mass binary star formation.

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Wide variations in how well or poorly people age

A new study reveals wide variations in how well or poorly people age. A 30-year gap separates countries with the highest and lowest ages at which people experience the health problems of a 65-year-old, according to a new scientific study. Researchers found 76-year-olds in Japan and 46-year-olds in Papua New Guinea have the same level of age-related health problems as an ''average'' person aged 65.

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Horseshoe crabs are really relatives of spiders, scorpions

By analyzing troves of genetic data and considering a vast number of possible ways to examine it, scientists now have a high degree of confidence that horseshoe crabs do indeed belong within the arachnids.

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क्यों न्यूयॉर्क की मेट्रो ट्रेन में 1 साल का बच्चा अकेला घूम रहा था

एक साल के बच्चों को घरों में भी अकेले छोड़ना भी खतरनाक है एेसे में कोर्इ बच्चा ट्रेन में अकेले कर्इ किलोमीटर का सफर करें तो हैरानी की बात तो है ही।

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साबित करो मेहनती हो आैर एक करोड़पति के दामाद बन कर पाआे 2 करोड़ की संपत्ति

जी हां थार्इलैंड के करोड़पति फार्म हाउस मालिक ने सोशलमीडिया पर ये आॅफर दिया है कि वो अपनी लगभग 2 करोड़ की संपत्ति आैर कुवांरी बेटी के लिए मेहनती दामाद तलाश रहा है।

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Listening to quantum radio

Researchers have created a quantum circuit that enables them to listen to the weakest radio signal allowed by quantum mechanics. This new quantum circuit opens the door to possible future applications in areas such as radio astronomy and medicine (MRI). It also enables researchers to do experiments that can shed light on the interplay between quantum mechanics and gravity.

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A nap a day keeps high blood pressure at bay

It seems that napping may do more than just reboot our energy level and improve our mood. New research has found that people who took advantage of a midday snooze were more likely to have a noticeable drop in blood pressure compared with those who didn't nap.

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'Goldilocks' stars may be 'just right' for finding habitable worlds

A new study finds a particular class of stars called K stars, which are dimmer than the Sun but brighter than the faintest stars, may be particularly promising targets for searching for signs of life.

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Chimpanzees lose their behavioral and cultural diversity

Chimpanzees are well known for their extraordinary diversity of behaviors, with some behaviors also exhibiting cultural variation. An international research team has investigated whether chimpanzee behavioral diversity is reduced under high human impact. By comparing sets of chimpanzee behaviors across a large number of social groups exposed to different levels of human disturbance, the scientists found a reduction in behavioral diversity when human impact was high.

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What does the Milky Way weigh? Hubble and Gaia investigate

We can't put the whole Milky Way on a scale, but astronomers have been able to come up with one of the most accurate measurements yet of our galaxy's mass, using NASA's Hubble Space Telescope and the European Space Agency's Gaia satellite.

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Stars exploding as supernovae lose their mass to companion stars during their lives

Stars over eight times more massive than the sun end their lives in supernovae explosions. The composition of the star influences what happens during the explosion.

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When semiconductors stick together, materials go quantum

Researchers have developed a simple method that could turn ordinary semiconducting materials into quantum machines -- superthin devices marked by extraordinary electronic behavior that could help to revolutionize a number of industries aiming for energy-efficient electronic systems -- and provide a platform for exotic new physics.

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New 'acoustic metamaterial' cancels sound

Researchers have demonstrated it's possible to silence noise using an open, ringlike structure, created to mathematically perfect specifications, for cutting out sounds while maintaining airflow.

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New surprises from Jupiter and Saturn

The latest data from the giant planets has sent researchers back to the drawing board. Cassini orbited Saturn for 13 years before its dramatic final dive into the planet's interior, while Juno has been orbiting Jupiter for two and a half years; the data collected has been 'invaluable but also confounding,' said one of the researchers.

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हवार्इ जहाज में सफर के दौरान नवजात बच्चे की मां ने साथी यात्रियों से क्यों मांगी माफी!

मां बनना खुशी की बात होती है तो बच्चे के साथ सफर करने में आखिर एेसी क्या बात हो गर्इ एक मां को हवार्इ जहाज में सहयात्रियों से मांगनी पड़ी माफी।

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NFL players show heart abnormalities decades after retiring from football

While elite athletes are often at peak fitness, they are not immune to -- and may even face a higher risk for -- potentially detrimental heart conditions later in life. Former National Football League (NFL) players, particularly those with larger body sizes, were found to have heart abnormalities specifically associated with high blood pressure in a recent study.

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Migrating snowline plays outsized role in setting pace of Greenland ice melt

Meltwater from Greenland's ice sheet is a leading contributor to global sea level rise, and a new study shows that an underappreciated factor -- the position of the snowline on the ice sheet -- plays a key role in setting the pace of melting.

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Elegant interplay of coloration strategies is discovered in squid's smart skin

In the blink of an eye, the squid's skin changes color and pattern for the purpose of camouflage or sexual signaling, a virtuosic display that has long fascinated scientists. Now, collaborators report a paradigm-shifting discovery in how specialized organs in squid skin, called chromatophores, contribute to the feat via an elegant interplay of pigmentary action and structural coloration. Their study brings bio-inspired engineers ever closer to building smart skin.

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Dust affects tooth wear and chewing efficiency in chimpanzees

Periodical dust loads on foods places dietary-physiological stress on the digestive system in chimpanzees. The study implicates that extrinsic abrasive particles carried by dust-laden winds affect tooth wear and evolutionary fitness.

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Researchers aim for spintronic applications thanks to great leap forward

Electric currents drive all our electronic devices. The emerging field of spintronics looks to replace electric currents with what are known as spin currents. Researchers have discovered that the magnetic spin Hall effect could lead to low-power, high-speed and high-capacity devices. They have created sample devices which can further research into potential applications.

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Some worms recently evolved the ability to regrow a complete head

New study reveals regeneration of amputated body parts is not always an ancient trait and scientists might need to rethink the way they compare animals with regenerative abilities.

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Impact of urbanization on wild bees underestimated

Wild bees are indispensable pollinators, supporting both agricultural productivity and the diversity of flowering plants worldwide.

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Dinosaurs were thriving before asteroid strike that wiped them out

Dinosaurs were unaffected by long-term climate changes and flourished before their sudden demise by asteroid strike, according to new research.

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Alzheimer's-like symptoms reversed in mice

A diet containing compounds found in green tea and carrots reversed Alzheimer's-like symptoms in mice genetically programmed to develop the disease.

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As sea level rises, wetlands crank up their carbon storage

Some wetlands perform better under pressure. A new study revealed that when faced with sea-level rise, coastal wetlands respond by burying even more carbon in their soils.

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Can entangled qubits be used to probe black holes?

Information escapes from black holes via Hawking radiation, so it should be possible to capture it and use it to reconstruct what fell in: if given time longer than the age of the universe. However, if information is scrambled rapidly when it falls in, it may be possible to resurrect it by capturing Hawking radiation from entangled qubits. Physicists confirmed scrambling in a quantum computer, based on predictions by theorists.

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Sleep tight! Researchers identify the beneficial role of sleep

Why do animals sleep? Why do humans 'waste' a third of their lives sleeping? Researchers now reveal a novel and unexpected function of sleep that they believe could explain how sleep and sleep disturbances affect brain performance, aging and various brain disorders. Using 3D time-lapse imaging techniques in live zebrafish, they were able to define sleep in a single chromosome resolution and show that single neurons require sleep in order to perform nuclear maintenance.

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Biologists experimentally trigger adaptive radiation

Using host-specific parasites isolated on individual pigeon 'islands,' the scientists showed that descendants of a single population of feather lice adapted rapidly in response to preening. They found that preening drives rapid and divergent camouflage in feather lice transferred to different colored rock pigeons. Over four years and 60 generations, the lice evolved heritable color differences that spanned the full color range of the lice genus found on 300 bird species worldwide.

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Swifts are born to eat and sleep in the air

Nearly 100 species of swift are completely adapted to life in the air. That is the conclusion of researchers after having studied a third species and observing that some individuals did not land for over three months.

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HIV remission achieved in second patient

A second person has experienced sustained remission from HIV-1 after ceasing treatment, reports a new article. The case report comes ten years after the first such case, known as the 'Berlin Patient.'

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Capturing bacteria that eat and breathe electricity

Researchers traveled to Yellowstone National Park to find bacteria that may help solve some of the biggest challenges facing humanity -- environmental pollution and sustainable energy.

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Scientists levitate particles with sound to find out how they cluster together

Scientists have used sound waves to levitate particles, revealing new insights about how materials cluster together in the absence of gravity -- principles which underlie everything from how molecules assemble to the very early stages of planet formation from space dust.

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Australian dingo is a unique Australian species in its own right

Since the arrival of British settlers over 230 years ago, most Australians have assumed dingoes are a breed of wild dog. But 20 leading researchers have confirmed in a new study that the dingo is actually a unique, Australian species in its own right.

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How megalodon's teeth evolved into the 'ultimate cutting tools'

Megalodon, the largest shark that ever lived, is known only from its gigantic bladelike teeth. But these teeth took millions of years to evolve into their final, iconic form.

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न्यूज चैनल ने स्कार्इ स्क्रैपर की छत पर बना दिया स्टूडियो

सबसे हट कर आैर स्पेशल दिखने की होड़ में हर कोर्इ शामिल है पर वाकर्इ कमाल कुछ ही लोग कर पाते हैं। इन्हीं में शामिल हो गया है कोरिया का एक न्यूज चैनल।

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Mini cheetah is the first four-legged robot to do a backflip

New mini cheetah robot is springy and light on its feet, with a range of motion that rivals a champion gymnast. The four-legged powerpack can bend and swing its legs wide, enabling it to walk either right-side up or upside down. The robot can also trot over uneven terrain about twice as fast as an average person's walking speed.

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Thousands of tiny quakes shake Antarctic ice at night

Scientists placed seismometers on the McMurdo Ice Shelf and recorded hundreds of thousands of tiny 'ice quakes' that appear to be caused by pools of partially melted ice expanding and freezing at night. The phenomenon may be able to help scientists track glacier melting -- and to help explain the breakup of large ice shelves.

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Ancient mammal remains digested by crocodiles reveal new species

Fossilized bones that appear to have been digested by crocodiles in the Cayman Islands have revealed three new species and subspecies of mammal that roamed the island more than 300 years ago.

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Chemical pollutants in the home degrade fertility in both men and dogs, study finds

New research suggests that environmental contaminants found in the home and diet have the same adverse effects on male fertility in both humans and in domestic dogs.

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The case of the over-tilting exoplanets

For almost a decade, astronomers have tried to explain why so many pairs of planets outside our solar system have an odd configuration -- their orbits seem to have been pushed apart by a powerful unknown mechanism. Researchers say they've found a possible answer, and it implies that the planets' poles are majorly tilted.

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Engineers develop fast method to convert algae to biocrude

A team of chemical engineers have developed a new kind of jet mixer for creating biomass from algae that extracts the lipids from the watery plants with much less energy than the older extraction method. This key discovery now puts this form of energy closer to becoming a viable, cost-effective alternative fuel.

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Spider silk could be used as robotic muscle

Researchers have found that spider silk produces a strong twisting motion when exposed to humidity, and may be usable for future artificial muscles or actuators.

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