Survivors: Nature's Indestructible Creatures

Aroview: Professor Richard Fortey conducts this fascinating search across the globe for life forms which have survived the three biggest mass extinctions in the earth's history: the end of the Ice Age, when many megafauna were wiped out; the KT boundary, when a meteor hit Earth and killed the dinosaurs; and the Great Dying, a series of cataclysmic events which saw 90% of species perish 250 million years ago.