Germany heat wave

A polar bear refreshes in the water on a hot sunny day at the zoo in Gelsenkirchen, Germany, Friday, Aug. 17, 2012. The temperatures in Germany are expected to rise up to 38 degrees Celsius over the weekend. (AP Photo)

A polar bear (Ursus maritimus) cools in a pool in Hamburg's Hagenbeck Zoo, northern Germany Sunday Aug. 19, 2012. In some parts of Germany temperatures rose over 38 degrees Celsius . Picture was taken through glass pane. (AP Photo)

An elephant refreshes himself with water at the zoo in Duisburg, Germany, Friday, Aug. 17, 2012. The temperatures in Germany are expected to rise up to 38 degrees Celsius over the weekend. (AP Photo)

An African elephant sucks on a big block of iced treat, composed of a frozen mix of fruits and vegetables, during a heat wave at the zoo in Erfurt, central Germany, Monday, Aug. 20, 2012. In some parts of Germany temperatures rose over 38 degrees Celsius . (AP Photo)

An African elephant struggles with an ice treat, composed of a frozen mix of fruits and vegetables during a heat wave at the zoo in Erfurt, central Germany, Monday, Aug. 20, 2012. In some parts of Germany, temperatures rose over 38 degrees Celsius . (AP Photo)

An African elephant enjoys a refreshing shower during a heat wave, at the zoo in Erfurt, central Germany, Monday, Aug. 20, 2012. In some parts of Germany, temperatures rose to over 38 degrees Celsius . (AP Photo)

Fun rafters get a cool shower while speeding down a traditional raft lane of the Rodach river near Wallenfels, southern Germany, Saturday, Aug. 18, 2012. (AP Photo)

In this aerial view, people gather at the lido of Lake Wannsee in Berlin Sunday Aug. 19, 2012. In some parts of Germany temperatures rose over 38 degrees Celsius . (AP Photo)

A boy takes a bath in a fountain in central Berlin, Germany, Sunday, Aug. 19, 2012. In some parts of Germany, temperatures rose over 38 degrees Celsius . (AP Photo)

Thousands have entered a public pool at this year's hottest day in Herten, Germany, Sunday, Aug. 19, 2012. With temperatures up to 40 degrees Celsius, the summer hits the peak this weekend all over Germany. (AP Photo)

Tourists Viola, Joerg and Vanessa, from left, sunbath in front of Berlin Cathedral in central Berlin, Germany, Sunday, Aug. 19, 2012. In some parts of Germany, temperatures rose over 38 degrees Celsius . (AP Photo)

People take a bath and splash with water in a fountain in central Berlin, Germany, Sunday, Aug. 19, 2012. In some parts of Germany, temperatures rose over 38 degrees Celsius . (AP Photo)

Fourteen year old Marlene cools down in a fountain, in Berlin, Germany, Monday, Aug. 20, 2012. In some parts of Germany temperatures rose to over 38 degrees Celsius . (AP Photo)