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Nature | Clip | The Oldest Mammal on the Planet

Analysis of one Amino acid in Bowhead Whales' tissue is revealing astonishing information about their age. There are some estimates that the whales could be over 200 years old, making them one of the oldest animals on the planet.

S30 E8 | 0:01:38 | AIRED: 2/21/2012 |
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