The last drop of water evaporated into the heat, and the Savuti Channel in Northern Botswana stood barren and dry, a skeleton of the lush river it had once been. It was the year 1982, and Beverly and Dereck Joubert were on assignment for National Geographic, documenting the gradual demise of one of Africa’s great rivers. Although they had known this moment would come, it wasn’t until the last of the water disappeared, that the heaviness of the situation came to full fruition. This was a key moment in history,an event that would change not only the surrounding landscape, but also affect the wildlife that had come to depend on the channel for its sustenance. Much of this devastating change was documented in the…