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

In this illustration, SpaceX's Crew Dragon approaches the International Space Station for docking. The capsule has room to carry seven astronauts. SpaceX/NASA hide caption

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SpaceX/NASA

SpaceX Readies For Key Test Of Capsule Built To Carry Astronauts Into Space

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Astronaut Buzz Aldrin walks on the moon during the Apollo 11 mission in 1969. The landing site at Tranquility Base has remained mostly untouched — though that could change as more nations and even commercial companies start to explore the moon. NASA hide caption

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NASA

How Do You Preserve History On The Moon?

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William Lovelace/Getty Images

The Power Of Martin Luther King Jr.'s Anger

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A white-tailed deer keeps its ears open while grazing in South Hero, Vt. Rob Swanson/AP hide caption

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Rob Swanson/AP

Hungry Deer May Be Changing How Things Sound In The Forest

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Ariel Davis for NPR

If You're Often Angry Or Irritable, You May Be Depressed

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A bit of lapis lazuli — a rich blue pigment — is trapped within a central tooth's dental tartar on this lower jaw of a European woman who died sometime between A.D. 997 and 1162. Christina Warinner/Science Advances hide caption

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Christina Warinner/Science Advances

A Blue Clue In Medieval Teeth May Bespeak A Woman's Artistry Circa A.D. 1000

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Biological Cartographers Seek To Map The Trillions Of Cells In The Human Body

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A Look At The Methodical Plan China Has Laid Out For Space Exploration

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This enhanced color image of Ultima Thule was taken at a distance of 85,000 miles and highlights its reddish surface. The image on the right has a far higher spatial resolution. NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute hide caption

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NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

An artist's impression of NASA's New Horizons spacecraft encountering Ultima Thule, a Kuiper Belt object that orbits 1 billion miles (1.6 billion kilometers) beyond Pluto, on Jan. 1, 2019. JPL/NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Steve Gribben hide caption

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JPL/NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Steve Gribben

Way Beyond Pluto, An Icy World Is Ready For Its Close-Up

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2018: A Big Year In Space

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Drosophila melanogaster, the common fruit fly, is a mainstay of genetics and biology labs. Courtesy of Marcus Stensmyr hide caption

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Courtesy of Marcus Stensmyr

When And Where Fruit Flies First Bugged Humans

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Neil deGrasse Tyson said of the allegations: "But what happens when it's just one person's word against another's, and the stories don't agree? That's when people tend to pass judgment on who is more credible than whom." Santiago Felipe/Getty Images hide caption

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Santiago Felipe/Getty Images

Forged in 1879 and sanctioned by the General Conference on Weights and Measures at its first meeting, Le Grand K, the international prototype of the kilogram, has been kept under lock and key in a vault outside Paris. BIPM hide caption

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BIPM

Say Au Revoir To That Hunk Of Metal In France That Has Defined The Kilogram

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