It's the battle of the early humans as Steve Backshall and Michaela Strachan uncover the David-and-Goliath story of Neanderthals versus Homo Sapiens as both species compete for survival.

We’ve all been there — looking for a movie that’ll keep us on the edge of our seats ... climate experiment to stop global warming has plunged the world into an ice age, wiping out most of humanity.