Mammoth Amount of Ice Age Fossils Found in Colorado

Aired: 2/1/2012 | 0:08:40 | Clip
Wednesday's "NOVA" looks at an unexpected discovery near a Rocky Mountain ski resort: thousands of bones from ice age mammals, including mammoths, ground sloths and mastodons. Hari Sreenivasan speaks with Kirk Johnson of Denver Museum of Nature and Science about the dig and ongoing research into the animals' mysterious deaths.

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