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 - Inside Out
Teeth are ideally strong, hard, and pearly white, right? Not for the narwhal and its inside out tusk.
-- Apr 18, 2014

Narwhals - Sensitivity
How does a whale say 'ouch'? Scientists studying the narwhal's unusual tusk-like tooth try to tackle that problem.
-- Apr 17, 2014

Narwhals - Tubes
Tender teeth hurt, so why would an animal swimming in frigid waters have an 8-foot long sensitive tooth?
-- 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.
-- 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!
-- Apr 14, 2014

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