Joe Palca Joe Palca is a science correspondent for NPR.
Joe Palca 2010
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Joe Palca

Robert Davies (standing) and the quartet during a performance of "The Crossroads Project." Musicians include (left to right) Robert Waters, Rebecca McFaul, Anne Francis Bayless and Bradley Ottesen. Andrew McCallister /Courtesy of The Crossroads Project hide caption

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Andrew McCallister /Courtesy of The Crossroads Project

Climate Scientist Tries Arts To Stir Hearts Regarding Earth's Fate

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NASA says this "blue marble" image is the most detailed true-color image of the entire Earth to date. NASA hide caption

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NASA

Satellite Set To Stream Daily Images Of Earth From Space

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On The Ant Highway, There's Never A Backup

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Unless there's a serious pileup, ants in traffic tend to bypass a collision and just keep going. A physicist has found a way to model this behavior with a mathematical equation. iStockphoto hide caption

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iStockphoto

Why Ants Handle Traffic Better Than You Do

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An artist's rendering of what Dearcmhara shawcrossi probably looked like in dinosaur times. Todd Marshall/University of Edinburgh hide caption

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Todd Marshall/University of Edinburgh

Ancient Scottish Sea Reptile Not 'Nessie,' But Just As Cute

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Scientists Bring The Sun Down To Earth To Learn How It Works

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Larkin Carey, an optical engineer with Ball Aerospace, examines two test mirror segments designed for the James Webb Space Telescope. The mirror for the scope is extremely powerful, but heavy and pricey. NASA hide caption

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NASA

Could Glitter Help Solve NASA's Giant Telescope Problem?

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Methane Bursts On Mars Could Hint At Previous Life

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Why Some Scientific Collaborations Are More Beneficial Than Others

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A blast from the past: Using data from four telescopes, NASA created this image of the first documented sighting of a supernova, made by Chinese astronomers in 185 A.D. NASA/JPL-Caltech/B. Williams hide caption

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NASA/JPL-Caltech/B. Williams

To Search For A New Supernova, Build A New Camera

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Norma Melendez, a community health worker with City Health Works, walks along Second Avenue on her way to meet a client. City Health Works is an organization that is attempting to bring an African model of health care delivery to the United States. Bryan Thomas for NPR hide caption

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Bryan Thomas for NPR

Africa Inspires A Health Care Experiment In New York

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Researchers at Cold Spring Harbor Laboratory say their new genetic toolkit to improve tomato yield without compromising flavor can be used in all varieties, from plum to cherry. Courtesy of Zach Lippman/Cold Spring Harbor Laboratory hide caption

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Courtesy of Zach Lippman/Cold Spring Harbor Laboratory

Examples of what the iPhone app looks for: The white reflection from an otherwise dark pupil can indicate a tumor, a cataract or other eye problems. Claire Eggers/NPR hide caption

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Claire Eggers/NPR

Look Here: Phone App Checks Photos For Eye Disease

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Jennifer Doudna and her colleagues found an enzyme in bacteria that makes editing DNA in animal cells much easier. Cailey Cotner/UC Berkeley hide caption

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Cailey Cotner/UC Berkeley

In Hopes Of Fixing Faulty Genes, One Scientist Starts With The Basics

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