A shark warning is displayed near Gracetown, Western Australia, in November. An Australian man was killed by a shark near the area that month, sparking a catch-and-kill order. Rebecca Le May/EPA/Landov hide caption

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Researchers Create New 'Memory' Metals That Could Improve Safety

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Archeologists Race Against Time In Warming Arctic Coasts

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Editing Your Life's Stories Can Create Happier Endings

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Two African penguins stretch their flippers at the Maryland Zoo. Adam Cole/NPR hide caption

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RoboCop? How About RoboPenguin!

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Villages in the Lower Shire valley of Malawi, like this one named Jasi, rely heavily on subsistence farming and steady rainfall, and are struggling to produce steady harvests. Jennifer Ludden/NPR hide caption

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Malawian Farmers Say Adapt To Climate Change Or Die

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Even when a flood obliterates homes, as Superstorm Sandy did in 2012 in the Rockaway neighborhood of Queens, N.Y., the urge to rebuild can be strong. Spencer Platt/Getty Images hide caption

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Federal Flood Insurance Program Drowning In Debt. Who Will Pay?

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Florida's Mangroves Move North As Temperatures Rise

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Each bottle of Champagne contains around 50 million bubbles. But will any of them accelerate the inebriation process? Victor Bezrukov/Flickr.com hide caption

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Could a countdown to death help you lead a more ecstatic life? Daniel Horowitz for NPR hide caption

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Nothing Focuses The Mind Like The Ultimate Deadline: Death

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Bon Voyage, Voyager: Old Friends Take Stock

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People drew maps of body locations where they feel basic emotions (top row) and more complex ones (bottom row). Hot colors show regions that people say are stimulated during the emotion. Cool colors indicate deactivated areas. Image courtesy of Lauri Nummenmaa, Enrico Glerean, Riitta Hari, and Jari Hietanen. hide caption

toggle caption Image courtesy of Lauri Nummenmaa, Enrico Glerean, Riitta Hari, and Jari Hietanen.