http://www.cnn.com/2007/US/07/27/falling.ice.ap/index.html

Large chunks of ice, one of them reportedly about 50 pounds, fell from the sky in this northeast Iowa city, smashing through a woman's roof and tearing through nearby trees.

David Travis, a professor of geography and geology and an associate dean at the University of Wisconsin-Whitewater, has studied the phenomenon of large chunks of ice falling from a clear sky. He said it's possible the ice could have been a megacryometeor -- "similar to a hailstone, but without the thunderstorm."

Travis is part of a research team that has documented more than 50 possible megacryometeor cases during the past five years. Some involve ice chunks the size of microwave ovens.

Thanks to Gerry.

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