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

Manic, sad, up, down. Your voice may reveal mood shifts. iStockphoto hide caption

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Phone App Might Predict Manic Episodes In Bipolar Disorder

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The First American Teenager, Millennia-Old And Underwater

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Noah Shaw, now 5, shows off his Texas roots at a recent birthday party. Courtesy of Bryan Shaw hide caption

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Courtesy of Bryan Shaw

Chemist Turns Software Developer After Son's Cancer Diagnosis

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Eyewire: A Computer Game to Map the Eye

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The Z machine is located in Albuquerque, N.M., and is part of the Pulsed Power Program, which started at Sandia National Randy Montoya/Sandia National Laboratory hide caption

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Randy Montoya/Sandia National Laboratory

The Scientist Who Makes Stars On Earth

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Current water-filtering technology is costly, but MIT scientists are testing a simpler and cheaper method that uses wood from white pine trees. Wikimedia Commons hide caption

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Wikimedia Commons

To Clean Drinking Water, All You Need Is A Stick

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About 50,000 years ago, a meteorite struck earth east of present-day Flagstaff, leaving this crater as its calling card. Shane.torgerson/Wikimedia Commons hide caption

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Shane.torgerson/Wikimedia Commons

NASA's On Alert For Big Scary Asteroids. What About Smaller Ones?

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A nurse attaches the low-cost breathing machine (far left) to an infant at The Queen Elizabeth Central Hospital in Blantyre, Malawi. Jocelyn Brown/Rice University hide caption

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Jocelyn Brown/Rice University

Scientists Come Close To Finding True Magnetic Monopole

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Peter Stone Can't Get Enough Of Robots Playing Soccer

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After Hibernation, Rosetta Seeks Its Stone

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Neonatal nurse Florence Mwenifumbo monitors a newborn receiving bubble CPAP treatment in Blantyre, Malawi. The device was developed by students at Rice University in Houston. Rice 360/Rice University hide caption

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Rice 360/Rice University

Saving Babies' Lives Starts With Aquarium Pumps And Ingenuity

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Researchers Create New 'Memory' Metals That Could Improve Safety

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To Make Intersections Smarter, We Need Cars To Be Smarter, Too

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