Resultados de búsqueda para: “search”
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New for brain scientists: a census of neurons
With the launch of its searchable and publicly available «Cell Types Database,» the Allen Institute for Brain Science has taken a first crack at establishing a comprehensive census of cells that neuroscientists might encounter in their explorations.
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A Surprise for Evolution in Giant Tree of Life
Researchers build the world’s largest evolutionary tree and conclude that species arise because of chance mutations — not natural selection.
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X-Rays Reveal Why Old Chocolate Turns White
The white bloom marring the face of a chocolate bar hidden away for a bit too long, thankfully, doesn’t mean the candy can’t be consumed. But it does seem to change the flavor. Now researchers have figured out exactly what happens to compromised chocolate, and are offering hints on how to prevent the problem in the…
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Reverse Engineering Birds’ Beaks Into Dinosaur Bones
Birds evolved from dinosaurs 150 million years ago, a slow but thorough transformation. Their bodies gained aerodynamic feathers, their digits fused into wings, and they acquired a beak used to gather food Some researchers are now trying to pinpoint those genetic changes with experiments on chicken embryos. If the scientists succeed, they should eventually be…
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Electron microscopes close to imaging individual atoms
Researchers report that they’ve created the highest ever resolution cryo-EM image, revealing a druglike molecule bound to its protein target at near atomic resolution.
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Remains of oldest known relative of modern birds discovered in China
Researchers have stumbled upon the oldest known ancestor of all modern birds after breaking open a lump of ancient rock near a town in north-eastern China.
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Fjords soak up a surprising amount of carbon
Although fjords account for about 0.3% of Earth’s surface area, they sequester 18 million tonnes of carbon per year — 11% of the total absorbed by marine sediment, researchers report on 4 May inNature Geoscience.
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Crack addicts hooked on their environment
Around half of drug addicts relapse within a year of going “clean”. Research suggests we’d lower that figure if our crack clinics bore more of a resemblance to a drug den.
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Iron-Rich Rocks Could Hold Signs of Life
A robotic mission’s search for life on Mars may seem worlds away from human scientists wandering around hot springs in Yellowstone National Park. But a study of the Yellowstone hot springs has revealed new clues about how organic materials might get preserved in similar environments on the Red Planet, bettering our chances of finding possible…