Elephants in the Ngorongoro Crater, Tanzania Photo: Copyright (c) 2014 Rex Features. No use without permission.

Tanzania's elephant catastrophe: 'We recalculated about 1,000 times because we didn't believe what we were seeing'

Tanzania has lost two-thirds of its once mighty elephant population in just four years, writes Aislinn Laing  

The Telegraph | 19 July 2015