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Daily Science Webcasts

Each weekday, Pulse of the Planet provides its listeners with a two-minute sound portrait of Planet Earth, tracking the rhythms of nature, culture and science worldwide and blending interviews and extraordinary natural sound.Get more info.
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Narwhals - Tubes

Tender teeth hurt, so why would an animal swimming in frigid waters have an 8-foot long sensitive tooth?

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-- Apr 16, 2014

Narwhals - Legends

With its long tusk-like tooth and mottled coloration, the Narwhal has intrigued sailors and royalty alike and may have been the inspiration for the Unicorn.

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-- Apr 15, 2014

Narwhals - Big Tooth

A fifteen-foot whale with an 8 foot-long tusk may sound like another fish story, but it's not!

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-- Apr 14, 2014

Manatees - Molars and More

If they're napping, they can come to the surface and breathe without waking up, just by loosening the muscles that expands the air in their lungs.

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-- Apr 11, 2014

Manatees - Keeping Safe

If we protect the aquatic ecosystem, we're going to protect the manatees, the fisheries, all the benefits we derive from nature.