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Nature
Scientist Profile - Tony Sinclair
Tony Sinclair arrived in the Serengeti in 1965, looking to study the wildlife. In the decades that followed, his work revealed the ecological rules that govern this majestic place and most other ecosystems on Earth.
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52:58
Discover how cats first crossed from Asia into North America and became the top predators.
53:29
Discover how the first cats arose in the forests of Asia and later came to conquer Africa.
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52:55
Animals congregate in huge colonies partly out of necessity and partly for the security.
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52:55
Finding a good base of operations is key to successfully raising a family.
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52:55
The first in a three-part series about how animals build their remarkable homes.
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52:58
A biologist crosses the species divide and becomes part of a wild mule deer family.
52:58
Zebras embark on a mass migration from the saltpans of Botswana in search of water.
52:59
The mysterious eel is found all over the globe, in fresh and salt water ecosystems alike.