Survivors: Nature's Indestructible Creatures - Episode Guide

Richard Fortey travels to find the survivors of mass extinction events. He focuses on a series of cataclysms over a million-year period 250 million years ago.

Richard Fortey looks at how some species survived the catastrophic asteroid collision 65 million years ago that saw the end of the reign of the dinosaurs.

Professor Richard Fortey looks at how some species survived the ice age which began 2.8 million years ago, triggered by changes in the Earth's orbit around the sun.