Nature's Great Events (2009)

The summer melt of Arctic ice provides opportunities for millions of animals.

Every year, the survival of grizzly bears in North America depends on a spectacular natural event: the return of hundreds of millions of sa…

The story of a lion family's struggle to survive until the return of the great migration.

A look at the sardine run, which happens each winter along the South African coast.

Millions of animals time their migration across the Kalahari Desert to coincide with the the annual flooding of Botswana's Okavango Delta.

The summer plankton bloom in the north-east Pacific draws in animals in great numbers, from the billion-strong shoals of herring to migrato…