text: Bison overkill theory maybe debunked by DNA Big game hunters may be off the hook in the latest twist of a prehistoric whodunit that tries to explain why bison populations sharply crashed thousands of years ago.
inputs: Bison overkill theory maybe debunked by DNA Big game hunters may be off the hook in the latest twist of a prehistoric whodunit that tries to explain why bison populations sharply crashed thousands of years ago.