People cool off in the Trocadero fountains on a hot summer day in Paris August 19, 2009. REUTERS/Benoit Tessier (FRANCE ENVIRONMENT TRAVEL)
PALMA DE MALLORCA, SPAIN - AUGUST 15: Sunbathers enjoy the fine weather in Cala de Calobra near Torrent de Pareis on August 15, 2009 in Palma de Mallorca, Spain. (Photo by Jasper Juinen/Getty Images)
LONDON, ENGLAND - AUGUST 19: Grace Reeve, 8 of Camberwell plays in a fountain on the South Bank on August 19, 2009 in London, England. The Met office predicted one of the hottest days of the year so far, with temperatures in London and the South East expected to hit 30C. (Photo by Dan Kitwood/Getty Images)
TOPSHOTS
People enjoy the beach, on August 20, 2009, in Nice, southern France. AFP PHOTO STEPHANE DANNA (Photo credit should read STEPHANE DANNA/AFP/Getty Images)
Three girls dive in a swimming pool on August 19, 2009 in the eastern German town of Radebeul with temperatures around 30 degrees Celsius. Germany's hot summer weather is expected to reach 35 degrees Celsius on August 20, 2009. AFP PHOTO DDP/ NORBERT MILLAUER GERMANY OUT (Photo credit should read NORBERT MILLAUER/AFP/Getty Images)
LONDON, ENGLAND - AUGUST 19: Daniel Livermore, 6, dries in the sun after swimming in the Serpentine Lido on August 19, 2009 in London, England. The Met office predicted one of the hottest days of the year so far, with temperatures in London and the South East expected to hit 30C. (Photo by Dan Kitwood/Getty Images)
Children jump into the cold water of the Vierwaldstaettersee, in Isleten, Switzerland, Wednesday, Aug. 19, 2009. (AP Photo/Keystone/Urs Flueeler)
An Albanian boy walks next to the shore of the beach in the city of Durres, some 40 km (25 miles) from capital Tirana August 20, 2009. Albania has been gripped by hot weather, with temperatures reaching 38 degrees Celsius (100 degrees Fahrenheit). REUTERS/Arben Celi (ALBANIA ENVIRONMENT SOCIETY IMAGES OF THE DAY)
A man is seen in a fountain on a hot summer day in Seville on August 18, 2009. Temperatures reached 38 degrees Celcius in the south of Spain.AFP PHOTO/ CRISTINA QUICLER (Photo credit should read CRISTINA QUICLER/AFP/Getty Images)
Women sunbathe on the bank of the Dnepr River at a city beach in Kiev, August 17, 2009. Temperatures in Ukranian capital averaged around 30 degrees Celsius (86 degree Fahrenheit), weather bureau reported. REUTERS/Konstantin Chernichkin (UKRAINE ENVIRONMENT SOCIETY)
A girl refreshes with the water of a fountain in Rome, Italy, Tuesday, Aug. 18, 2009. The civil protection department issued a heat-wave warning for a number of Italian cities where temperatures are expected to reach or even surpass 40 degrees centigrade this week. Milan and Rome are among the nine cities where the heat wave is expected to be particularly severe and last several days. (AP Photo/Pier Paolo Cito)