National Geographic: A chunk of territory in southern Africa about the size of France has long been considered one of the last strongholds of the African elephant. The Kavango-Zambezi Transfrontier Conservation Area, better known as KAZA, straddles Angola, Zambia, Namibia, Botswana, and Zimbabwe and was believed to hold as many as 250,000 elephants.
But all is not well there. The latest statistics from the Great Elephant Census, an ambitious elephant-counting project led by Microsoft co-founder Paul G. Allen's private...