Join Ed for a wide-ranging conversation with Craig Spencer, founder of Trans-Frontier Africa and the Black Mambas Anti-Poaching Unit in South Africa. This week, we talk about rhino poaching, the rhino horn trade, elephant poaching, the all female anti-poaching unit known as the Black Mambas, and the challenges that go with securing a large, open nature reserve that adjoins Kruger National Park on one side and local communities on the other.