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2:51
Hardy, elusive, and smart, the wolverine dominates the harsh Alaskan wilderness.
2:53
Engineer Azzam Alwash recalls his childhood experience of the Mesopotamian marshes.
2:07
Crows are always watching, learning, and remembering.
2:30
Susan Fleming describes the awe-inspiring sight of a massive crow roost.
6:25
On the remote island of New Caledonia, crows are much smarter than anyone ever expected.
2:59
The people who knew Echo best reflect on their great loss.
3:53
The paradise tree snake can sail as far as 300 feet to get defend itself from predators.
