Climate, not humans, said to have killed off mammoths | Reuters.com
The Blitzkrieg, or overkill theory, said human hunters devastated most large mammal species and drove some to extinction.
"But contrary to that theory, my dates show numbers of bison and wapiti (elk) were expanding both before and during human colonisation," Guthrie explained.
His radiocarbon research, reported in the journal Nature, shows there was a 1,000-year different between the demise of the wild horse and the woolly mammoth which Guthrie said is inconsistent with other theories