PBS Nature - Frogs The Thin Green Line (2009)

Frogs have been hopping the planet for more than 350 million years; evolving into some of the most wondrous, diverse and beloved animals on earth. Suddenly, they're slipping away. Some say it's the greatest extinction since the dinosaurs. Ecosystems are beginning to unravel and medical cures are vanishing. It's a global crisis, mobilizing scientists around the world to stem the tide, before the next frog crosses the thin green line.

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