An Orangutan at the Audubon Zoo cools off in the water in New Orleans, Thursday, Aug. 16, 2007. (AP Photo/Judi Bottoni)


A young girl plays in the fountain at the Dorothy Chandler Pavilion in Los Angeles, Wednesday, Aug. 15. 2007. A heat wave continues in Southern California with National Weather Service reporting area temperatures in the high 90s expected throughout the week. The Los Angeles Department of Water and Power reported its highest power demand of the year Tuesday. (AP Photo/Nick Ut)

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Map shows average temperatures in the U.S. over the past week and highs for select cities; 2c x 3 5/8 inches; 96.3 mm x 92.1 mm


Matt Dedeluk of Monroe Mich., a summer intern with the Arkansas Travelers minor league baseball team, uses water to clean the front of Dickey-Stephens Park in North Little Rock, Ark., in near-record heat Wednesday, Aug. 15, 2007. (AP Photo/Danny Johnston)

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Kiara Daniels (5) cools off at a water faucet in the Athens-Limestone Wellness Park in Athens, Ala., Tuesday, Aug. 14, 2007. (AP Photo/The Decatur Daily, Jonathan Palmer)


Steven LaGard, 6, plays as water is sprayed on him in Houston,

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Motorists drive past a roadside thermometer in near record-breaking heat in Little Rock, Ark.

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