Here's quite the idea some folks, including Ted Turner, have come up with. They want to bring wild animals from Africa to live here in the Great Plains. The endangered animals would then have a home allowing them to be more closely monitored and be protected within the United States from poaching. This would in their eyes increase the chance for these creatures to gain population and diversity.
I'm not sure everyone would think this is a good idea. But I have to admit, I think it would be pretty cool and I'd be up for it. At least the idea should be explored further.