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Jim Estes got his start as an ecologist by chance.
2:57
This breakthrough study shows how wildebeest are the keystones to the Serengeti.
1:53
Mary Power is a freshwater ecologist who has spent her life studying river ecosystems.
2:49
Witness scientist Bob Paine's breakthrough discovery.
1:51
John Terborgh has spent a lifetime studying the Amazon rainforest.
2:12
Bob Paine was one of the greatest ecologists of all time.
2:54
This devoted father saves his chicks by tucking one under each wing.
2:17
Watch as a pair of bull hippos battle for a pool on the Okavango.
1:55
See how elephants actually help shape the flow of the Okavango River.
9:58
Join filmmakers Dereck and Beverly Joubert for a behind-the-camera exclusive.
2:22
Spend some time with these nesting African Skimmers on the Okavango River.
2:18
Filmmakers Dereck and Beverly Joubert joined us for a quick Q&A.
