Colorado mastodon bones show ancient warmer Earth

In this Nov. 25, 2014 photo, paleontology student Hillary McLean pieces back together the tusk of an ancient mastodon, part of an extensive discovery unearthed from Snowmass, Colo., inside a workroom at the Denver Museum of Nature and Science. A trove of ancient bones from gigantic animals discovered in the Colorado mountains provides a fascinating look at what happened about 120,000 years ago when the Earth got as warm as it is today, scientists say. (AP Photo/Brennan Linsley)

DENVER (AP) — A trove of ancient bones from gigantic animals discovered in the Colorado mountains is providing scientists with a fascinating look at what happened about 120,000 years ago when the E

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