Woolly Mammoth

Some experts hold that mammoths were hunted to extinction beginning some 10,000 years ago by the species that was to becomethe planet's dominant predator -- humans. Others argue that climate change was more to blame, leaving a species adapted for frigid climes ill-equipped to cope with a warming world.Mar 31, 2010

Last modified: Wednesday, 20 May 2015, 8:22 AM