This young female rhinoceros, photographed in Kenya in 2011, was killed by ivory poachers a few months after this photo was taken. Courtesy of Tom Snitch hide caption

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Courtesy of Tom Snitch

To Crack Down On Rhino Poaching, Authorities Turn To Drones

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Artistic reconstruction of Archicebus achilles in its natural habitat of trees. Xijun Ni/Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences hide caption

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Xijun Ni/Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences

Tiny, Ancient Tree-Dweller Was One Of Earth's Earliest Primates

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Nom Nom Nom: From left, a cast of teeth from a chimpanzee, Australopithecus afarensis and a modern human. We switched from an ape-like diet of fruits and leaves about 3.5 million years ago, according to fresh research. There's evidence that meat-eating came about a million years or so later. William Kimbel/Institute of Human Origins hide caption

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William Kimbel/Institute of Human Origins

Channel-billed toucans are important seed dispersers in rain forests. Courtesy of Lindolfo Souto/AAAS/Science hide caption

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Courtesy of Lindolfo Souto/AAAS/Science

Big-Mouthed Toucans Key To Forest Evolution

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Colonists built the original glass-blowing kiln in Jamestown, Va., at this beach for easy access to the sand. Now the site is just inches above the water level. John W. Poole/NPR hide caption

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John W. Poole/NPR

With Rising Seas, America's Birthplace Could Disappear

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The four cuts at the top of this skull "are clear chops to the forehead," says Smithsonian forensic anthropologist Douglas Owsley. Based on forensic evidence, researchers think the blows were made after the person died. Donald E. Hurlbert/Smithsonian hide caption

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Donald E. Hurlbert/Smithsonian

Bones Tell Tale Of Desperation Among The Starving At Jamestown

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Doctors at a hospital in Aleppo, Syria, treat a boy injured in what the government said was a chemical weapons attack on March 19. Syria's government and rebels accused each other of firing a rocket loaded with chemical agents outside of Aleppo. George Ourfalian/Reuters/Landov hide caption

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George Ourfalian/Reuters/Landov

How Doctors Would Know If Syrians Were Hit With Nerve Gas

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Wind turbines at the San Gorgonio Pass Wind Farm in Whitewater, Calif., in 2012. Bloomberg via Getty Images hide caption

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Bloomberg via Getty Images

Is The Sky The Limit For Wind Power?

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Thousands of "fairy circles" dot the landscape of the NamibRand Nature Reserve in Namibia. Why these barren circles appear in grassland areas has puzzled scientists for years. N. Juergens/AAAS/Science hide caption

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N. Juergens/AAAS/Science

What's Behind The 'Fairy Circles' That Dot West Africa?

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Jane Goodall Apologizes For Lifted Passages In Her Upcoming Book

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This photo from a Kyodo News helicopter shows a flame of natural gas from a Japanese deep-sea drilling ship on Tuesday. This successful extraction of methane from the seafloor was a world first. Kyodo/Landov hide caption

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Kyodo/Landov

Could Tapping Undersea Methane Lead To A New Gas Boom?

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Scientists say they have put together a record of global temperatures dating back to the end of the last ice age, about 11,000 years ago. This historical artwork of the last ice age was made by Swiss geologist and naturalist Oswald Heer. Oswald Heer/Science Source hide caption

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Oswald Heer/Science Source

Past Century's Global Temperature Change Is Fastest On Record

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In this Sept. 1, 2008, photo released by Wildlife Conservation Society, a male forest elephant strides across Langoue Bai, Gabon. Elizabeth M. Rogers/Wildlife Conservation Society via AP hide caption

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Elizabeth M. Rogers/Wildlife Conservation Society via AP

Elephant Poaching Pushes Species To Brink Of Extinction

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'Extinction Looms' For Forest Elephants Due To Poaching

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Energy Secretary Nominee Is An Academic, Politico

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