A worker splashes water on elephants to cool them off, the zoo of Karachi, Pakistan, 22 April 2016. Caretakers at Karachi's zoo were working to keep animals cool during a deadly heatwave affecting southern Pakistan. Large animals, including elephants from Tanzania, white lions, and tigers from Bengalm, have been deeply distressed due to the “unbearable” heat. (Photo by Shahzaib Akber/EPA)
