heat wave

People sit in the sun in Sheldon Square in west London...People sit in the sun in Sheldon Square in west London July 19, 2013. Britain's first prolonged heatwave in seven years has taken the country by surprise, with rails buckling, shops selling out of electric fans, and scientists estimating the surge in temperature could have caused hundreds of premature deaths.   REUTERS/Paul Hackett   (BRITAIN - Tags: ENVIRONMENT)

Paul Hackett/Reuters

People sit in the sun in Sheldon Square in west London on Friday. Britain’s first prolonged heatwave in seven years has taken the country by surprise, with rails buckling, shops selling out of electric fans, and scientists estimating the surge in temperature could have caused hundreds of premature deaths. Read more

Two boys hang from a metal railing on a bridge before jumping into the Pasig River below in Manila on April 19, 2013.  The Philippines has been experiencing the hottest days of the year with temperatures of 35 degrees Celsius (95 Fahrenheit) recorded in parts of the city.

Noel Celis/AFP

Two boys hang from a metal railing on a bridge before jumping into the Pasig River below in Manila on Friday. The Philippines has been experiencing the hottest days of the year with temperatures of 35 degrees centigrade recorded in parts of the city.