
An unidentified youth dives over a railing into a pool at the Anacostia Pool and Recreation Center, during a heat wave with the temperature at 100 degrees Fahrenheit, in Washington DC, USA, 07 July 2010. A swelter heat wave has hit the US East Coast this week, with temperatures expected to top 100 degrees from Virginia to Maine 07 July 2010. EPA/MICHAEL REYNOLDS

A man wore a shirt on his head to protect himself from the sun while crossing a street in New York, New York, USA, on 07 July 2010. The East Coast of the United States is experiencing a heat wave with temperatures reaching over 100 degrees Fahrenheit in many places. EPA/JUSTIN LANE

Woman talk while holding umbrellas to protect themselves from the sun in New York, New York, USA, on 07 July 2010. The East Coast of the United States is experiencing a heat wave with temperatures reaching over 100 degrees Fahrenheit in many places. EPA/JUSTIN LANE

Jim French, a building maintenance worker, makes adjustments to an air conditioner in New York, New York, USA, on 07 July 2010. The East Coast of the United States is experiencing a heat wave with temperatures reaching over 100 degrees Fahrenheit in many places. EPA/JUSTIN LANE

A girl held a fan over her head to protect herself from the sun while crossing a street in New York, New York, USA, on 07 July 2010. The East Coast of the United States is experiencing a heat wave with temperatures reaching over 100 degrees Fahrenheit in many places. EPA/JUSTIN LANE

Brian Perry, eight years old, cools off by jumping off a diving board at the Anacostia Pool and Recreation Center during a heat wave with the temperature at 100 degrees Fahrenheit, in Washington DC, USA, 07 July 2010. A swelter heat wave has hit the US East Coast this week, with temperatures expected to top 100 degrees from Virginia to Maine 07 July 2010. EPA/MICHAEL REYNOLDS

Anthony Young (top), sixteen years old, dives over a railing into a pool at the Anacostia Pool and Recreation Center, during a heat wave with the temperature at 100 degrees Fahrenheit, in Washington DC, USA, 07 July 2010. A swelter heat wave has hit the US East Coast this week, with temperatures expected to top 100 degrees from Virginia to Maine 07 July 2010. EPA/MICHAEL REYNOLDS