Extinct giant cave bears live on - in the DNA of today's brown bears

They weighed up to a ton each, and stood ten feet high on their hind legs.

Although the giant cave bear was driven to extinction 25,000 years ago, researchers have found in still lives on today - in the DNA of brown bears.

A new study confirms that about 0.9 to 2.4 percent of living brown bears' DNA traces back to the extinct species.

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