PRX - Pieces for Format: Special

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Caption: Scientists discovered the "sound channel" in 1944. Whales use it to communicate across oceans — and during the Cold War the Navy secretly used it to track nuclear subs. This 1948 graphic shows sound traveling on an axis 700 fathoms down in the Atlantic., Credit: Maurice Ewing and J. Lamar Worzel
Something unusual happens about a half mile under the sea. Ocean physics create a special zone where sound travels for hundreds, even thousands of ...

Bought by KUFM - Montana Public Radio, New Hampshire Public Radio, American Voices, Hark!, KFAI Minneapolis and more


  • Added: Aug 26, 2014
  • Length: 11:11
  • Purchases: 11
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Every drug we take is tested with crab blood. And it all started with a walk on a beach.

Bought by New Hampshire Public Radio, WAMC Northeast Public Radio, and WRST-FM Oshkosh


  • Added: Dec 04, 2012
  • Length: 07:23
  • Purchases: 3
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The history of aquaculture from the mid-20th century to the present.

  • Added: Jun 13, 2012
  • Length: 16:26