Matthew Brown is director of conservation for The Nature Conservancy in Africa.
In the late 1970s, the hirola population was estimated to be nearly 16,000. Today, fewer than 400 individual animals are believed to remain, making the hirola the world’s most endangered antelope. More
A proposed road through prime migratory lands has caused big controversy. Now the Tanzanian government has reached a compromise... so why aren't conservationists happy? More