Nell Greenfieldboyce Nell Greenfieldboyce is a NPR science correspondent.
Nell Greenfieldboyce 2010
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Nell Greenfieldboyce

Leandro Teixeira and Richard Dubielzig of the University of Wisconsin - Madison open the whale eye package. Richard Dubielzig and Leandro Teixeira/University of Wisconsin-Madison hide caption

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Richard Dubielzig and Leandro Teixeira/University of Wisconsin-Madison

All I Want For Christmas Is A Giant Whale Eye

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Health workers killed chickens in a Hong Kong market in 2014 in an effort to stop the spread of H7N9 flu. It's being watched closely as a virus that might spark a pandemic outbreak. Vincent Yu/AP hide caption

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Vincent Yu/AP

NIH Lifts Ban On Research That Could Make Deadly Viruses Even Worse

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Insights Into The Extinction Of The Passenger Pigeon

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Researchers found that when narwhals like these were released from a net, the animals' heart rates dropped even as they were swimming rapidly. Flip Nicklin/ Minden Pictures/Getty Images hide caption

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Flip Nicklin/ Minden Pictures/Getty Images

Stressed-Out Narwhals Don't Know Whether To Freeze Or Flee, Scientists Find

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An artist's conception of the most-distant supermassive black hole ever discovered, which is part of a quasar from just 690 million years after the Big Bang. Robin Dienel/Courtesy of the Carnegie Institution for Science/Nature hide caption

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Robin Dienel/Courtesy of the Carnegie Institution for Science/Nature

Trump Picks Businessman To Lead NOAA

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Astronauts aboard the International Space Station took this image of southern Scandinavia lit up at night. A green aurora is visible over the horizon. NASA hide caption

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NASA

Earth Is Lit, And That's A Problem

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Martha (right), the last known passenger pigeon, died in 1914. Her preserved body is now on display at the Smithsonian's National Museum of Natural History in Washington, D.C. Susan Walsh/AP hide caption

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Susan Walsh/AP

Why Did The Passenger Pigeon Go Extinct? The Answer Might Lie In Their Toes

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Archaeology workers toil in front of the Great Pyramid, in Giza, Egypt, in 2010. Researchers say they've discovered a new room inside the ancient structure. Amr Nabil/AP hide caption

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Amr Nabil/AP

Scientists Say They've Found Hidden Space In Great Pyramid Of Giza

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Trump's Nominee To Be The Next Head Of NASA Prepares For Senate Hearing

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Diagram of the path of a space rock from outside our solar system — the first ever observed. Brooks Bays / SOEST Publication Services / UH Institute for Astronomy hide caption

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Brooks Bays / SOEST Publication Services / UH Institute for Astronomy

D.C. Master Patrol Officer Benjamin Fettering shows a body camera worn in place of a normal radio microphone before a news conference in 2014. Brendan Smialowski/AFP/Getty Images hide caption

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Brendan Smialowski/AFP/Getty Images

Body Cam Study Shows No Effect On Police Use Of Force Or Citizen Complaints

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