February 11, 2009 • 50m
The summer melt of Arctic ice provides opportunities for millions of animals.
February 18, 2009 • 50m
Every year, the survival of grizzly bears in North America depends on a spectacular natural event: the return of hundreds of milli...Read more
February 25, 2009 • 50m
The story of a lion family's struggle to survive until the return of the great migration.
March 4, 2009 • 50m
A look at the sardine run, which happens each winter along the South African coast.
March 11, 2009 • 50m
Millions of animals time their migration across the Kalahari Desert to coincide with the the annual flooding of Botswana's Okavango Delta.
March 18, 2009 • 50m
The summer plankton bloom in the north-east Pacific draws in animals in great numbers, from the billion-strong shoals of herring t...Read more