Across Washington State, hydroelectric dams are blocking salmon as they migrate to their spawning grounds. Enter the salmon cannon. Ingrid Taylar/Flickr hide caption

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Opponents and supporters of a law that restricts abortion in Texas rallied outside the Texas Capitol in Austin as the bill was debated in July 2013. Eric Gay/AP hide caption

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Patrick Roy's company, Coastal Rental Equipment, used to rent these large pumps to offshore divers who work for oil and natural gas drillers. After the BP oil spill, when the government introduced a moratorium on drilling in the Gulf of Mexico, the Patterson, La., business suffered losses and eventually shut down. Jeff Brady/NPR hide caption

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New Yorkers can take city-run classes to learn how to make their homes and businesses less attractive to these guys. Ludovic Bertron/Flickr hide caption

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Big brown bats like this one are relatively common in urban areas, sometimes roosting in buildings. Contrary to popular belief, bats rarely carry rabies and are not rodents. They belong to the order Chiroptera, which means "hand-wing." Courtesy of Robert Marquis hide caption

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Researchers raised two groups of walking, air-breathing Polypterus senegalus — one on land and one on the water. They discovered that each group was able to adapt to be best suited to its environment. A. Morin, E.M. Standen, T.Y. Du, H. Larsson/McGill University hide caption

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A technician tests samples from Ebola-infected patients at a field lab, run by Doctors Without Borders, in Kailahun, Sierra Leone. Tommy Trenchard for NPR hide caption

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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 hide caption

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Bill Gates, Martha Stewart, LeBron James, Lindsay Lohan, Kermit the Frog and Conan O'Brien all got icily drenched for charity. via YouTube hide caption

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An earlier spring in Montana's Glacier National Park means full waterfalls at first — but much drier summers. Robert Glusic/Corbis hide caption

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