Frogs: The Thin Green Line
Preview | 30s
- Frogs have been hopping the planet for more than 350 million years, but large-scale die-offs of frogs around the world have prompted scientists to take desperate measures to try to save whatever populations they can. (Also 11PM; Thu. 3/20 at 3AM; Sat. 3/22 at 6PM)
Aired: 03/19/14
Expired: 03/19/14
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