Planet In Peril Part 2

In case you missed the begin of Planet in Peril documentary click here. This next part of the series from CNN shows us the effects that reintroducing wolves has done to ecosystem at Yellowstone park.

Next up Jeff Gorwin and Anderson Cooper travel to Cambodia to see how poachers are hunting down the endangered tigers in the area.

The journey continues as they get to know elephants a little too well in this one...

For more from this series check out the first three videos here or find out how this hippos tries to save a life.

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