Aired: Jan 24, 2012Professor Fortey focuses on a series of cataclysms over a million-year period...
Survivors
Season 1 Episode 3: Frozen in Time
Professor Fortey looks at the Ice Age. 2.8 million years ago - triggered by slight changes in the Earth's orbit around the sun and shifts in its ocean currents - the world began to cool. Within a few thousand years much of the planet was shrouded in a dense cloak of ice that would come and go until only 10,000 years ago. We call this age of ice - the Pleistocene Age - and it transformed the hierarchy of nature. This is the story of how a few specialist species that evolved to live in the...
