Five African countries -- Angola, Botswana, Namibia, Zambia, and Zimbabwe -- agreed in August 2011 to create the Kavango Zambezi Transfrontier Conservation Area. The area not only allows elephants to roam free across borders, but creates a framework to protect and share their precious water resources. The Kaza, as it's called, is 29 million hectares -- about the size of Italy. And it may provide a model for transboundary resource management that can address the challenges of a changing climate. Jeff Barbee reports.moreless
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