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

Climate models project 21st century global temperatures. NASA's Scientific Visualization Studio and NASA Center for Climate Simulation hide caption

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NASA's Scientific Visualization Studio and NASA Center for Climate Simulation

Big Data Predicts Centuries Of Harm If Climate Warming Goes Unchecked

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A view of the opening of COP21 on climate change Monday in Paris. More than 150 world leaders are meeting for the 21st Session of the Conference of Parties to the United Nations Framework Convention on Climate Change. Patrick Aventurier/Getty Images hide caption

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Patrick Aventurier/Getty Images

Zach Whitener, research associate at the Gulf of Maine Research Institute, holds a cod while collecting samples for a study. Gulf of Maine Research Institute hide caption

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Gulf of Maine Research Institute

Why Is It So Hard To Save Gulf Of Maine Cod? They're In Hot Water

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Imagine a bar without the booze. Delegates wrangling in Bonn, Germany, this week have to figure out soon how to cover the world's climate bill. Oliver Berg/DPA/Landov hide caption

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Oliver Berg/DPA/Landov

How U.N. Climate Negotiations Are Like Splitting A Bar Tab

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Hunter-Gatherers Don't Get More Sleep Than We Do, Study Finds

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Using an instrument they've named the HOLODEC, for Holographic Detector for Clouds, scientists can now see in fine detail the way air and water droplets mix at a cloud's wispiest edge. iStockphoto hide caption

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iStockphoto

What's At The Edge Of A Cloud?

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Gulping down coffee to stay awake at night delays the body's natural surge of the sleep hormone melatonin. Hayato D./Flickr hide caption

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Hayato D./Flickr

Caffeine At Night Resets Your Inner Clock

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The Antarctic ice sheet stores more than half of Earth's fresh water. Scientists wondered how much of it would melt if people burned all the fossil fuels on the planet. UPI /Landov hide caption

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UPI /Landov

What Would Happen If We Burned Up All Of Earth's Fossil Fuels?

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National Geographic paleoartist John Gurche used fossils from a South African cave to reconstruct the face of Homo naledi, the newest addition to the genus Homo. Photo by Mark Thiessen/National Geographic hide caption

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Photo by Mark Thiessen/National Geographic

South African Cave Yields Strange Bones Of Early Human-Like Species

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A child suffering from dengue fever lies in a bed in the isolation ward of a Rawalpindi, Pakistan, hospital in November 2013. There is no treatment for dengue, whose symptoms include fever, severe joint pain, headaches and bleeding. Muhammed Muheisen/AP hide caption

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Muhammed Muheisen/AP

An impala strikes a pose under a forest canopy in Zimbabwe. Morkel Erasmus/Getty Images/Gallo Images hide caption

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Morkel Erasmus/Getty Images/Gallo Images

Tree Counter Is Astonished By How Many Trees There Are

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Delegates took their seats during the plenary session at the Bonn climate change conference on March 10, 2014. Negotiations resume this week; by the end of the year, the U.N. hopes to have forged a new global agreement. UNclimatechange/Flickr hide caption

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UNclimatechange/Flickr

How Are U.N. Climate Talks Like A Middle School? Cliques Rule

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Male and female tungara frogs. Among these frogs, the guy with the best call usually wins the gal — except when you throw a third-choice loser into the mix. Alexander T. Baugh/Encyclopedia of Life hide caption

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Alexander T. Baugh/Encyclopedia of Life

Froggy Went A-Courtin', But Lady Frogs Chose Second-Best Guy Instead

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How Dorothy Parker's Ashes Ended Up In Baltimore

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A brown bear in its natural habitat. Wildlife ecologists in Minnesota found that black bears in their study experienced an increase in heart rate when buzzed by drones. iStockphoto hide caption

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iStockphoto

Drones Increase Heart Rates Of Wild Bears. Too Much Stress?

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