A python embryo turns its leg cells into a pair of penises. Researchers now believe that signals from the embryonic gut trigger the development of the penis in many different species.
Patrick Tschopp/Harvard Medical School/Department of Genetics
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Patrick Tschopp/Harvard Medical School/Department of Genetics
David Roberts says the Cyber-Enhanced Working Dog harness will allow humans to monitor dogs' physical and emotional states remotely, such as in search and rescue operations.
Becky Kirkland/North Carolina State University
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Becky Kirkland/North Carolina State University
In 49 U.S. states, spotting the squished disc in this spinal MRI is still much easier than learning the price of the MRI in advance.
AWelshLad/iStockphoto
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Saah Exco was found alone on a beach in Liberia's West Point slum, naked and abandoned and likely an Ebola victim.Research suggests the story of one needy individual motivates charitable donors more than statistics about millions of sufferers.
David Gilkey/NPR
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Researchers at Cold Spring Harbor Laboratory say their new genetic toolkit to improve tomato yield without compromising flavor can be used in all varieties, from plum to cherry.
Courtesy of Zach Lippman/Cold Spring Harbor Laboratory
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Courtesy of Zach Lippman/Cold Spring Harbor Laboratory
Strontium atoms floating in the center of this photo are the heart of the world's most precise clock. The clock is so exact that it can detect tiny shifts in the flow of time itself.
Courtesy of the Ye group and Brad Baxley/JILA
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Courtesy of the Ye group and Brad Baxley/JILA
Stringy particles of Ebola virus (blue) bud from a chronically infected cell (yellow-green) in this colorized, scanning electron micrograph.
NIAID/Science Source
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Don't look for leading Ebola researchers at the Sheraton New Orleans. Louisiana health officials told doctors and scientists who have been in West Africa not to come to a medical meeting in town.
Prayitno/Flickr
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After a hard day of bruising battle, ancient gladiators reached for a post-workout drink, according to an ancient account. New research backs that up.
Stefano Bianchetti/Corbis
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Patients with certain kinds of brain damage can wind up with locked-in syndrome: they may be able to think just fine, but are unable to communicate their thoughts to others. A recently published case study shows that a non-invasive brain-computer interface can help.
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