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Buildings collapse into a sinkhole at the Summer Bay Resort on U.S. Highway 192 in Clermont, Florida, Monday, August 12, 2013. Guests had only 10 to 15 minutes to escape the collapsing buildings at the Summer Bay Resort on U.S. Highway 192 in the Four Corners area, located about 7 miles east of Walt Disney World resort, where a large sinkhole- about 60 feet in diameter and 15 feet deep- opened in the earth late Sunday. (Red Huber/Orlando Sentinel/MCT via Getty Images)
Buildings collapse into a sinkhole at the Summer Bay Resort on U.S. Highway 192 in Clermont, Florida, Monday, August 12, 2013. Guests had only 10 to 15 minutes to escape the collapsing buildings at the Summer Bay Resort on U.S. Highway 192 in the Four Corners area, located about 7 miles east of Walt Disney World resort, where a large sinkhole- about 60 feet in diameter and 15 feet deep- opened in the earth late Sunday. (Red Huber/Orlando Sentinel/MCT via Getty Images)

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CNN's John Berman reports on the science behind sinkholes and how early warning signs should be taken seriously.

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CNN's John Berman reports on the science behind sinkholes and how early warning signs should be taken seriously.