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Episode 5: The Calling

The Calling

Season 4 Episode 5
53:05
When Whales Could Walk

When Whales Could Walk

Season 51 Episode 1
53:31
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TED Talks

Latif Nasser: Discovery in the Arctic - Clip

In this excerpt from the PBS special TED Talks: Science and Wonder, Radiolab's Latif Nasser takes us across the frozen Arctic with a paleobiologist who makes a rather remarkable discovery. Finding 3.5 million year old bones preserved in the ice, the scientist uses a new process called "collagen fingerprinting" to determine the ancient find was a long way from its current home.

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