The granulated surface of the lake bed known as the Racetrack is a favorite destination for tourists — and for scientists who want to investigate trails left by the meandering stones.
Momatiuk - Eastcott/Corbis
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In the moonscape of Death Valley, one mystery stands out: boulders that seem to creep along the desert floor when nobody's looking. Thanks to video and GPS, scientists now think they know why.
James Tomsheck poses in his office in Washington in June 2009. At the time, he was assistant commissioner for internal affairs with U.S. Customs and Border Protection.
Alex Brandon/AP
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Bob O'Connor, a Foster Farms veterinarian, holds an 11-day-old chick at a ranch near the town of Merced, in California's Central Valley.
Dan Charles/NPR
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Artist Paul Harding's take on Jack "The King" Kirby, which is featured on the special-edition beer brewed for a Kirby Day celebration at Schmaltz Brewery in Clifton Park, N.Y.
Paul Harding
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Sonia Marquez of the Colorado Immigrant Rights Coalition is encouraging Latinos to turn out for this year's midterm elections.
Kirk Siegler/NPR
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The granulated surface of the lake bed known as the Racetrack is a favorite destination for tourists — and for scientists who want to investigate trails left by the meandering stones.
Momatiuk - Eastcott/Corbis
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