USA Today: Climate change is prompting some conservation groups to broaden strategy in buying pristine lands, recognizing that some may be under water in 50 years or undergo other drastic changes. For the first time, land trusts and other conservationists are factoring in evidence that global warming is altering the migration of species, reconfiguring coastlines and transforming natural habitats. “Natural habitat in one place now might move 100 miles in 50 years because of climate …