[دانه کولانه]

People swim to avoid the heat in a swimming pool in the Everland amusement park in Yongin, about 50 km (31 miles) south of Seoul, July 13, 2008. (REUTERS/Everland Amusement Park/Handout)

A bather is silhouetted as he prepares to dive into the Walensee lake in the town of Walenstadt, about 75 km (47 miles) outside of Zurich, July 16, 2008. (REUTERS/Christian Hartmann)

A surfer falls from his surf board the Escobilla beach in Ixtapa, Mexico, Sunday, July 6, 2008. (AP Photo/Eduardo Verdugo)