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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

Oliver Sacks, Renowned Neurologist And Author, Dies At 82

His book Awakenings, about reviving patients from a catatonic state was turned into a 1990 film. He also wrote more than a dozen other books, including The Man Who Mistook His Wife for a Hat.
NPR

Correction: Italians And Celiac Disease

A correction to our story about gluten-free options in Italy, the land of pizza and pasta. Italian children are not routinely tested for celiac disease, as we incorrectly reported.
NPR

Sanders Gaining On Clinton. '2008 All Over Again'?

Vermont Sen. Bernie Sanders has the energy, the enthusiasm and now showing strength in the poll numbers as the Democratic nomination contest looks more and more like a race every day.
NPR

Uber Hires Hackers To Secure Driverless Cars

NPR's Rachel Martin reports that the ride-sharing service Uber is hiring experts to protect driverless cars from being hacked.

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