Children play in a river to cool off as schools remain closed due to the ongoing heatwave in Temerloh, outside Kuala Lumpur, on April 11, 2016. More than 250 Malaysian schools were closed on April 11 due to a heatwave brought on by the El Nino weather phenomenon which is severely affecting food production and causing chronic water shortages in many countries. / AFP PHOTO / MOHD RASFANMOHD RASFAN/AFP/Getty Images

Dead fish are pictured on the dry banks of the Pahang river during the ongoing heatwave in Termerloh, outside Kuala Lumpur, on April 11, 2016. More than 250 Malaysian schools were closed on April 11 due to a heatwave brought on by the El Nino weather phenomenon which is severely affecting food production and causing chronic water shortages in many countries. / AFP PHOTO / MOHD RASFANMOHD RASFAN/AFP/Getty Images

LONDON, ENGLAND - APRIL 11: A bee pollinates blossom on April 11, 2016 in London, England. Blossom has flowered as milder weather begins to arrive, though wintery weather delivered snow to northern parts of the United Kingdom over the weekend. (Photo by Dan Kitwood/Getty Images)

LONDON, ENGLAND - APRIL 11: A bee pollinates blossom on April 11, 2016 in London, England. Blossom has flowered as milder weather begins to arrive, though wintery weather delivered snow to northern parts of the United Kingdom over the weekend. (Photo by Dan Kitwood/Getty Images)

LONDON, ENGLAND - APRIL 11: A bee pollinates blossom on April 11, 2016 in London, England. Blossom has flowered as milder weather begins to arrive, though wintery weather delivered snow to northern parts of the United Kingdom over the weekend. (Photo by Dan Kitwood/Getty Images)

A woman looks for river shells called "etok" along the banks of the Pahang river during an ongoing heatwave in Termerloh, outside Kuala Lumpur, on April 11, 2016. More than 250 Malaysian schools were closed on April 11 due to a heatwave brought on by the El Nino weather phenomenon which is severely affecting food production and causing chronic water shortages in many countries. / AFP PHOTO / MOHD RASFANMOHD RASFAN/AFP/Getty Images

A child plays in a river to cool off as schools remain closed due to the ongoing heatwave in Termerloh, outside Kuala Lumpur, on April 11, 2016. More than 250 Malaysian schools were closed on April 11 due to a heatwave brought on by the El Nino weather phenomenon which is severely affecting food production and causing chronic water shortages in many countries. / AFP PHOTO / MOHD RASFANMOHD RASFAN/AFP/Getty Images

Children walk along the dry banks of the Pahang river as schools remain closed due to the ongoing heatwave in Termerloh, outside Kuala Lumpur, on April 11, 2016. More than 250 Malaysian schools were closed on April 11 due to a heatwave brought on by the El Nino weather phenomenon which is severely affecting food production and causing chronic water shortages in many countries. / AFP PHOTO / MOHD RASFANMOHD RASFAN/AFP/Getty Images