Um, so, the world is not as wild as it was. Well, we've destroyed it. Not just ruined it. I mean, we have completely... well, destroyed that world. T… - David Attenborough

Sensing the approaching danger, the snail flees. But in a world of snail paces, the conch is something of a Ferrari. It calls for desperate measures. Exhausted by the effort of its last-ditch attempt, the tulip snail is slowly... gunned... down.

Tyrannosaurus rex, an animal to spark the imagination for all of us. What kind of an animal was it? What did it look like? How did it live? Now, scientific research has answered such questions, and not just about T. rex, but the other species that lived alongside it. And the latest imaging technology enables us to bring them all… to life.

I'll bet when our prehistoric ancestors first dug for tubers and planted seeds in Europe, one of these little robins appeared within a couple of days. Other animals must have done the same job for them before human beings did. Once, not so long ago, wild pig were common all over Europe, and they're great diggers and rootlers. So maybe the robin's boldness and friendliness with other kinds of animals started in prehistory, even before human beings arrived in Europe.