Chromosphaera perkinsii is a single-celled species discovered in 2017 in marine sediments around Hawaii. The first signs of its presence on Earth have been dated at over a billion years, well before the appearance of the first animals. A team has observed that this species forms multicellular structures that bear striking similarities to animal embryos. These observations suggest that the genetic programs responsible for embryonic development were already present before the emergence of animal life, or that C. perkinsii evolved independently to develop similar processes. Nature would therefore have possessed the genetic tools to 'create eggs' long before it 'invented chickens'.
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Wednesday 6 November 2024
Interstellar methane as progenitor of amino acids?
Gamma radiation can convert methane into a wide variety of products at room temperature, including hydrocarbons, oxygen-containing molecules, and amino acids, reports a research team. This type of reaction probably plays an important role in the formation of complex organic molecules in the universe -- and possibly in the origin of life. They also open up new strategies for the industrial conversion of methane into high value-added products under mild conditions.
from All Top News -- ScienceDaily https://ift.tt/pexf3D5
from All Top News -- ScienceDaily https://ift.tt/pexf3D5
Asteroid grains shed light on the outer solar system's origins
Tiny grains from asteroid Ryugu are revealing clues to the magnetic forces that shaped the far reaches of the solar system over 4.6 billion years ago. The findings suggest the distal solar system harbored a weak magnetic field, which could have played a role in forming the giant planets and other objects.
from All Top News -- ScienceDaily https://ift.tt/6xzuPtY
from All Top News -- ScienceDaily https://ift.tt/6xzuPtY
Mighty radio bursts linked to massive galaxies
Researchers have uncovered where FRBs are more likely to occur in the universe -- massive star-forming galaxies rather than low - mass ones.
from All Top News -- ScienceDaily https://ift.tt/JNks693
from All Top News -- ScienceDaily https://ift.tt/JNks693
Tuesday 5 November 2024
Groundbreaking study provides new evidence of when Earth was slushy
At the end of the last global ice age, the deep-frozen Earth reached a built-in limit of climate change and thawed into a slushy planet. Results provide the first direct geochemical evidence of the slushy planet -- otherwise known as the 'plume-world ocean' era -- when sky-high carbon dioxide levels forced the frozen Earth into a massive, rapid melting period.
from All Top News -- ScienceDaily https://ift.tt/2T8PNLj
from All Top News -- ScienceDaily https://ift.tt/2T8PNLj
Towards a hydrogen-powered future: Highly sensitive hydrogen detection system
Hydrogen, a promising fuel, has extensive applications in many sectors. However, its safe and widespread use necessitates reliable sensing methods. While tunable diode laser absorption spectroscopy (TDLAS) has proved to be an effective gas sensing method, detecting hydrogen using TDLAS is difficult due to its weak light absorption property in the infrared region. Addressing this issue, researchers developed an innovative calibration-free technique that significantly enhances the accuracy and detection limits for sensing hydrogen using TDLAS.
from All Top News -- ScienceDaily https://ift.tt/Bg4JDFj
from All Top News -- ScienceDaily https://ift.tt/Bg4JDFj
Deaf male mosquitoes don't mate
Romance is a complex affair in humans. There's personality, appearance, seduction, all manner of physical and social cues. Mosquitoes are much more blunt. Mating occurs for a few seconds in midair. And all it takes to woo a male is the sound of a female's wingbeats. Imagine researchers' surprise when a single change completely killed the mosquitoes' libidos.
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from All Top News -- ScienceDaily https://ift.tt/opjmsOq
Monday 4 November 2024
New trigger proposed for record-smashing 2022 Tonga eruption
Fifteen minutes before the massive January 2022 eruption of the Hunga Tonga-Hunga Ha'apai volcano, a seismic wave was recorded by two distant seismic stations. The researchers propose that the seismic wave was caused by a fracture in a weak area of oceanic crust beneath the volcano's caldera wall. That fracture allowed seawater and magma to pour into and mix together in the space above the volcano's subsurface magma chamber, explosively kickstarting the eruption.
from All Top News -- ScienceDaily https://ift.tt/AGgIcus
from All Top News -- ScienceDaily https://ift.tt/AGgIcus
The secrets of baseball's magic mud
The unique properties of baseball's famed 'magic' mud, which MLB equipment managers applied to every ball in the World Series, have never been scientifically quantified -- until now. Researchers now reveal what makes the magic mud so special.
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from All Top News -- ScienceDaily https://ift.tt/9xUv2Ff
Synthetic genes engineered to mimic how cells build tissues and structures
Researchers have developed synthetic genes that function like the genes in living cells. The artificial genes can build intracellular structures through a cascading sequence that builds self-assembling structures piece by piece. The discovery offers a path toward using a suite of simple building blocks that can be programmed to make complex biomolecular materials, such as nanoscale tubes from DNA tiles. The same components can also be programmed to break up the design for different materials.
from All Top News -- ScienceDaily https://ift.tt/auUmEhe
from All Top News -- ScienceDaily https://ift.tt/auUmEhe
Fossil of huge terror bird offers new information about wildlife in South America 12 million years ago
Evolutionary biologists report they have analyzed a fossil of an extinct giant meat-eating bird -- which they say could be the largest known member of its kind -- providing new information about animal life in northern South America millions of years ago.
from All Top News -- ScienceDaily https://ift.tt/JUr40YA
from All Top News -- ScienceDaily https://ift.tt/JUr40YA
Astronomers discover the fastest-feeding black hole in the early universe
Astronomers have discovered a supermassive black hole at the center of a galaxy just 1.5 billion years after the Big Bang that is consuming matter at a phenomenal rate -- over 40 times the theoretical limit. While short lived, this black hole's 'feast' could help astronomers explain how supermassive black holes grew so quickly in the early Universe.
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from All Top News -- ScienceDaily https://ift.tt/xhRBTfK
Sunday 3 November 2024
Indigenous cultural burning has protected Australia's landscape for millennia, study finds
Ancient cultural burning practices carried out by Indigenous Australians limited fuel availability and prevented high intensity fires in southeastern Australia for thousands of years, according to new research.
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from All Top News -- ScienceDaily https://ift.tt/HJAtoYL
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