The Smithsonian's Jon Blundell scans the fossilized foot bone — the metatarsal — of the Wankel T. rex to help create a digital 3-D image of the long-dead dinosaur.
Nikki Kahn/The Washington Post
Cindy Minnix waits for a bus in a flooded street on Oct. 18, 2012, in Miami Beach. A changing climate is making floods related to high tides more frequent, scientists say.
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"The State of the Birds" 2014 report found that red knots (above) and other shorebirds are among the most threatened groups in the U.S. More than half of U.S. shorebird species are on the report's Watch List — species that are currently endangered or at risk.
Gerrit Vyn/The Smithsonian Institution
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