sciencehabit writes: Until about 11,000 years ago, mammoths, giant beavers, and other massive mammals roamed North America. Many researchers have blamed their demise on incoming Paleoindians, the first Americans, who allegedly hunted them to extinction. But a new study fingers climate and environmental changes instead. The findings could have implications for conservation strategies, including controversial proposals for “rewilding” lions and elephants into North America.
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