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Nature
Scientist Profile - Jim Estes
Jim Estes got his start as an ecologist by chance. Half a century later, his research on sea otters is heralded as a classic case study on keystone species.
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53:33
At Reteti Sanctuary, caretakers prepares to release their oldest orphans into the wild.
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53:33
In northern Kenya, a remarkable conservation experiment is unfolding at Reteti Sanctuary.
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51:54
Animal parents must balance risk and reward to raise their young in grasslands.
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53:24
Follow the complex lives of giant elephant bulls in Amboseli and Mount Kilimanjaro.
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53:38
Follow a female mountain lion in the Montana mountains over the course of a decade.
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53:41
See how the Arctic’s most enigmatic animals are coping as the sea ice melts.