Take one species out and everything starts to crumble.” The western black rhino was declared extinct seven years ago, another victim of the lucrative and illegal rhino-horn trade. Vitale hopes ...

The world has known 11 subspecies of rhino. The western black rhino was declared extinct in 2011. Another, the northern white rhino, was down to just six specimens before one of the last two males ...

A fresh wave of poaching in the past few years, however, is posing a significant threat to this recovery. The western black rhino was also declared extinct in November 2011.

In drought-stricken parts of Africa, wildlife conservation groups are fighting to preserve endangered species such as black rhinos. It is a dangerous job but activists say they love it. For those who ...