Associated Press: It’s not the best-researched global-warming theory, but it could be the most horrifying to certain fans of college football: Environmentalists said Friday that climate change might push the growing range of Ohio’s iconic buckeye tree out of the state, leaving it for archrival Michigan. Save The Buckeye, a coalition of environmental activists and outdoor enthusiasts, has a billboard in Columbus warning about the fate of the buckeye tree, and backers plan to hold rallies during football …