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Vertebrate Genomes Hide Ancient Viruses

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Spinning Some Silken Science

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This composite image of brain scans shows two traits of a highly impulsive individual. The cool colors in the midbrain are indicative of a decrease in dopamine receptor levels while the warm colors show elevated levels of dopamine in a different part of the brain called the striatum. Joshua W. Buckholtz and David H. Zald hide caption

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Joshua W. Buckholtz and David H. Zald

Just Buy It: Impulsiveness Tied To Brain Chemical

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A Pleurosigma, a type of phytoplankton in the ocean. Phytoplankton generate more than half of the Earth's oxygen. Harry Taylor/Nikon Small World hide caption

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Harry Taylor/Nikon Small World

The Food Chain's Weak Link: Tiny Ocean Plants Dying

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Scientists Say A Gel Can Slow HIV Spread

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Robots That Swim With The Fishes, Intentionally

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Why Do We Like What We Like?

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Scientists studied the Manduca sexta caterpillar under X-ray and found that when caterpillars walk, their guts move forward first, followed by the rest of their bodies in a rippling movement. Ted Kropiewnicki/Tree of Life Web Project hide caption

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Ted Kropiewnicki/Tree of Life Web Project

Gut Check: How Do Caterpillars Walk?

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Is Climate Change Leading To Super Marmots?

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The white circle marks the location where the Deepwater Horizon rig exploded April 20. The dark black swirls in the center of the image are oil. NASA hide caption

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NASA

Anthropologist Brian Richmond is trying to determine what the footprints of modern humans can tell us about how we evolved. NPR hide caption

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Fast Feet: A Springy Step Helps Humans Walk

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Are Protons Even Smaller Than We Thought?

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Voice blindness, or phonagnosia, is a rare disorder that has to do with how the brain processes voices. iStockphoto.com hide caption

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iStockphoto.com

'Voice Blind' Man Befuddled By Mysterious Callers

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The sediment levels in San Francisco Bay are going down, leaving wetlands with less protection from rising sea levels. Justin Sullivan/Getty Images hide caption

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Justin Sullivan/Getty Images

Clear Waters, Cloudy Future For California Wetlands

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