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The Science Of Sinkholes

A man in Florida died after a sinkhole opened beneath his bedroom, swallowing him as he slept. A golfer broke his shoulder when a sinkhole opened on a golf course in Illinois. Suddenly it seems sinkholes are making news everywhere. But scientists insist they're a common and naturally occurring geologic phenomenon. Sinkholes usually occur on the fragile terrain called “karst," which underlies about 20 percent of the United States. Sinkholes also can be triggered by human activity. We learn what sinkholes reveal about the interconnectedness of life above and below ground, our freshwater supplies and climate change.

Sinkhole Map

This simplified map shows the areas with potential for sinkholes and karst in the conterminous United States (Source: U.S. Geological Survey)

NPR

Comic-Con Has Become Poké-Con

At this year's San Diego Comic-Con, one of the biggest phenomena isn't just inside the convention center, it's all around: Swarms of people staring at their phones as they play Pokémon Go.
NPR

Scraped, Splattered — But Silent No More. Finally, The Dinner Plate Gets Its Say

Instagram is the Internet's semi-obsessive, borderline-creepy love letter to food. But behind every great meal is a plate doing a pretty-OK job. So a comedian made an Instagram to celebrate plates.
NPR

In Kaine, Clinton Gains A Swing-State Spanish Speaker

Who is Tim Kaine, and what does he bring to the Democratic presidential ticket? NPR's Mara Liasson provides answers.
NPR

Making The Cloud Green: Tech Firms Push For Renewable Energy Sources

Few people can demand what kind of electricity they get. But Microsoft and Facebook, which operate huge, power-hungry data centers, are trying to green up the electricity grid with their buying power.

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