Lillian Mariscalo of Oyster Bay, N.Y., cools off in the waters of an Oyster Bay beach on Long Island's North shore Saturday, July 7, 2012. The heat gripping much of the country was set to peak Saturday in several places, with temperatures of more than 100 degrees expected in Philadelphia, excessive heat warnings in the Midwest and ongoing power outages of more than a week in the mid-Atlantic. (AP Photo/Craig Ruttle)
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