Major step toward fully 3D-printed active electronics

Researchers produced 3D-printed, semiconductor-free logic gates, which perform computations in active electronic devices. As they don't require semiconductor materials, they represent a step toward 3D printing an entire active electronic device.

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Liftoff! NASA's Europa Clipper sails toward ocean moon of Jupiter

NASA's Europa Clipper has embarked on its long voyage to Jupiter, where it will investigate Europa, a moon with an enormous subsurface ocean that may have conditions to support life. The largest spacecraft NASA ever built for a mission headed to another planet, Europa Clipper also is the first NASA mission dedicated to studying an ocean world beyond Earth.

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Evolution in real time

Snails on a tiny rocky islet evolved before scientists' eyes. The marine snails were reintroduced after a toxic algal bloom wiped them out from the skerry. While the researchers intentionally brought in a distinct population of the same snail species, these evolved to strikingly resemble the population lost over 30 years prior.

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Ordered defects may be key for solution-deposited semiconductors, enabling high-speed printable circuits and next-generation displays

A new solution deposition process for semiconductors yields high-performing transistors by introducing more defects, counterintuitively. Researchers used these devices to construct high- speed logic circuits and an operational high-resolution inorganic LED display.

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Bilingualism makes the brain more efficient, especially when learned at a young age

A new study from The Neuro (Montreal Neurological Institute-Hospital) of McGill university, the University of Ottawa and the University of Zaragoza in Spain elaborates on bilingualism's role in cognition, showing increased efficiency of communication between brain regions.

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Asymmetric placebo effect in response to spicy food

The expectations humans have of a pleasurable sensation asymmetrically shape neuronal responses and subjective experiences to hot sauce, according to a new study.

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Viruses are teeming on your toothbrush, showerhead

Microbiologists found that showerheads and toothbrushes are teeming with an extremely diverse collection of viruses -- most of which have never been seen before.

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Another step towards decoding smell

We often only realize how important our sense of smell is when it is no longer there: food is not as tasty as it once was, or we no longer react to dangers such as the smell of smoke. Researchers have investigated the neuronal mechanisms of human odor perception for the first time. Individual nerve cells in the brain recognize odors and react specifically to the smell, the image and the written word of an object, for example a banana. The results of this study close a long-standing knowledge gap between animal and human odor research.

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Team engineers new enzyme to produce synthetic genetic material

A research team describes how they engineered an efficient new enzyme that can produce a synthetic genetic material called threose nucleic acid. The ability to synthesize artificial chains of TNA, which is inherently more stable than DNA, advances the discovery of potentially more powerful, precise therapeutic options to treat cancer and autoimmune, metabolic and infectious diseases.

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New insights into how Mars became uninhabitable

NASA's Curiosity rover, currently exploring Gale crater on Mars, is providing new details about how the ancient Martian climate went from potentially suitable for life -- with evidence for widespread liquid water on the surface -- to a surface that is inhospitable to terrestrial life as we know it.

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Holographic 3D printing has the potential to revolutionize multiple industries

Researchers have developed a novel method of 3D printing that uses acoustic holograms. The process is called holographic direct sound printing (HDSP). It builds on a method introduced in 2022 that described how sonochemical reactions in microscopic cavitations regions -- tiny bubbles -- create extremely high temperatures and pressure for trillionths of a second to harden resin into complex patterns. Now, by embedding the technique in acoustic holograms that contain cross-sectional images of a particular design, polymerization occurs much more quickly. It can create objects simultaneously rather than voxel-by-voxel.

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Researchers confront new US and global challenges in vaccinations of adults

Over the past decade, decreasing vaccination rates now threaten the huge beneficial impacts of vaccinations in the U.S. and globally. Researchers discuss the multifactorial barriers including increasing vaccine hesitancy and new clinical and public health challenges in vaccinations of U.S. adults.

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Scientists discover a secret to regulating our body clock, offering new approach to end jet lag

Scientists have discovered the secret to regulating our internal clock. They identified that this regulator sits right at the tail end of Casein Kinase 1 delta, a protein which acts as a pace setter for our internal biological clock or the natural 24-hour cycles that control sleep-wake patterns and other daily functions, known as circadian rhythm.

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Autobiographical memory in the digital age: Our lives in the mirror of our data

Never before have people recorded more information about their lives than today. But what does this mean for the way we remember our lives and how we talk about them? Researchers are trying to find answers to these questions.

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Commonly used arm positions can substantially overestimate blood pressure readings

Researchers conclude that commonly used ways of positioning the patient's arm during blood pressure (BP) screenings can substantially overestimate test results and may lead to a misdiagnosis of hypertension.

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After injury, these comb jellies can fuse to become one

Researchers have made the surprising discovery that one species of comb jelly (Mnemiopsis leidyi) can fuse, such that two individuals readily turn into one following an injury. Afterwards, they rapidly synchronize their muscle contractions and merge digestive tracts to share food.

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Neuroscientists spark shelter-seeking response by reactivating memory circuit

Using a sophisticated brain-imaging system, neuroscientists say they have successfully reactivated a specific memory circuit in mice, causing them to seek out shelter when no shelter is actually present.

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A leap in behavioral modelling: Scientists replicate animal movements with unprecedented accuracy

Scientists have developed a new method to simulate the complex movements of animals with exceptional accuracy. The research team set out to solve a long-standing challenge in biology -- how to accurately model the intricate and seemingly unpredictable movements of living organisms. They focused on the nematode worm Caenorhabditis elegans, a model organism widely used in biological research. The findings help predict and understand animal behavior, with potential applications ranging from robotics to medical research.

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Most accurate ultrasound test could detect 96% of women with ovarian cancer

Head-to-head study of diagnostic test accuracy found IOTA ultrasound ADNEX model had 96% sensitivity and acceptable specificity in first study of its kind.

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As temperatures rise, researchers identify mechanisms behind plant response to warming

Plants widen microscopic pores on their leaves in response to heat. But scientists lacked an understanding of the mechanisms behind this 'sweating' function. Now, biologists have unlocked the details behind these processes and identified two paths that plants use to handle rising temperatures.

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Scientists create flies that stop when exposed to red light

Ever wish you could stop that fruit fly on your kitchen counter in its tracks? Scientists have created flies that halt under red light. In doing so, they discovered the precise neural mechanisms involved in stopping. Their findings, published this week in Nature, have implications far beyond controlling fly behavior. They demonstrate how the brain engages different neural mechanisms depending on environmental context.

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Scientists decode key mutation in many cancers

Inside every cell, inside every nucleus, your continued existence depends on an incredibly complicated dance. Proteins are constantly wrapping and unwrapping DNA, and even minor missteps can lead to cancer. A new study reveals a previously unknown part of this dance -- one with significant implications for human health.

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Using antimatter to detect nuclear radiation

Discerning whether a nuclear reactor is being used to also create material for nuclear weapons is difficult, but capturing and analyzing antimatter particles has shown promise for monitoring what specific nuclear reactor operations are occurring, even from hundreds of miles away. Researchers have developed a detector that exploits Cherenkov radiation, sensing antineutrinos and characterizing their energy profiles from miles away as a way of monitoring activity at nuclear reactors. They proposed to assemble their device in northeast England and detect antineutrinos from reactors from all over the U.K. as well as in northern France.

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Stronger together: miniature robots in convoy for endoscopic surgery

Miniature robots on the millimeter scale often lack the strength to transport instruments for endoscopic microsurgery through the body. Scientists are now combining several millimeter-sized TrainBots into one unit and equipping them with improved 'feet'. For the first time, the team was able to perform an electric surgical procedure on a bile duct obstruction experimentally with a robotic convoy.

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