How Old Is the Endangered Polar Bear?
Monday, July 23, 2012 - 15:30
in Earth & Climate
Polar bears may have trod the planet for millions of years, according to a new genetic analysis . That suggests the white-coated, massive bears have weathered previous natural climate changes, and may predate the Arctic ice that is their preferred--and only--habitat today, which is why the species future remains uncertain presently. [More]