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

The Mystery Of The Fireball That Lit Up The Western Sky

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Though Jupiter's red spot looks small in this photo, it's actually about 10,000 miles wide — bigger than Earth's diameter. Space Telescope Science Institute/NASA hide caption

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Space Telescope Science Institute/NASA

How Jupiter's Red Spot Makes Things High Above It Hot, Hot, Hot

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Yao honey hunter Orlando Yassene holds a male greater honeyguide temporarily captured for research in the Niassa National Reserve, Mozambique. The birds will flutter in front of people, tweet and fly from tree to tree to guide hunters to bees' nests that are hidden inside the trunks of hollow trees. This teamwork could date back thousands or even a million years. Claire Spottiswoode hide caption

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Claire Spottiswoode

How Wild Birds Team Up With Humans To Guide Them To Honey

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About 70 percent of Earth is covered by clouds at any given moment. Their interaction with climate isn't easy to study, scientists say; these shape-shifters move quickly. NOAA/Flickr hide caption

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NOAA/Flickr

Climate Change May Already Be Shifting Clouds Toward The Poles

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Congress is requiring NASA to travel to Jupiter's moon Europa by 2022. Currently, it is the space agency's only new mission planned for the outer solar system. NASA/JPL hide caption

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NASA/JPL

What Comes Next For NASA After Juno? Not Much

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Stacks of boxes containing critical supplies stretch almost as far as the eye can see in this Strategic National Stockpile warehouse. Courtesy of the CDC hide caption

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Courtesy of the CDC

Inside A Secret Government Warehouse Prepped For Health Catastrophes

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This view of North America as seen in Google Earth shows colored areas that denote levels of light pollution as detailed in the New World Atlas of Artificial Sky Brightness. Fabio Falchi et al./AAAS hide caption

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Fabio Falchi et al./AAAS

Light Pollution Hides Milky Way From 80 Percent Of North Americans, Atlas Shows

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A silver-haired bat, the type that transmitted rabies to a woman in Wyoming after apparently biting her while she slept. Lyn Alweis/Denver Post via Getty Images hide caption

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Lyn Alweis/Denver Post via Getty Images

Cyrtophora citricola, a type of orb-weaving spider, live in big colonies. So males potentially have a large pool of females from which to choose a mate. Buschwerk/Flickr hide caption

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Buschwerk/Flickr

She's A Man-Eater, And That's OK With Male Orb-Weaving Spiders

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Scientists say bumblebees can sense flowers' electric fields through the bees' fuzzy hairs. Jens Meyer/AP hide caption

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Jens Meyer/AP

Bumblebees' Little Hairs Can Sense Flowers' Electric Fields

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Female Drosophila bifurca flies have an organ to store sperm (right) that male flies compete to fill, crowding out rivals. Scott Pitnick/Nature hide caption

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Scott Pitnick/Nature

For Female Fruit Flies, Mr. Right Has The Biggest Sperm

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Aedes aegypti mosquito photographed through a microscope. Felipe Dana/AP hide caption

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Felipe Dana/AP

CDC: 157 Pregnant Women In The U.S. Have Tested Positive For Zika

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Every bit of steel in the car you drive has been measured as to its capability to withstand certain forces — pushing and pulling. Machines like this do the measuring. Jennifer Lauren Lee/NIST PML hide caption

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Jennifer Lauren Lee/NIST PML

How Do You Lift A Million Pounds Of Stainless Steel? Very Carefully

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These mitochondria, in red, are from the heart muscle cell of a rat. Mitochondria have been described as "the powerhouses of the cell" because they generate most of a cell's supply of chemical energy. But at least one type of complex cell doesn't need 'em, it turns out. Science Source hide caption

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Science Source

This artist's concept depicts some of the planetary discoveries made by NASA's Kepler Space Telescope. Tuesday's announcement more than doubles the number of verified planets discovered by the Kepler mission. W. Stenzel/NASA hide caption

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W. Stenzel/NASA

NASA Spots 1,284 New Planets, Including 9 That Are 'Potentially Habitable'

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