People enjoy a hot summer day on the water of Lake Leman in Lausanne
A young man jumps from a pedalo into the water of Lake Leman as he and his friends enjoy a hot summer day in Lausanne August 17, 2012. The Federal Office of Meteorology MeteoSwiss has launched a warning for a heat wave for the weekend until Wednesday August 22. REUTERS/Denis Balibouse (SWITZERLAND - Tags: ENVIRONMENT SOCIETY)