Ep 20. Death of the Megabeasts

A team of scientific detectives from around the world attempt to crack one of sciences most enduring mysteries - what killed the megafauna? Long after the extinction of the dinosaurs, extraordinary species of giant beasts roamed the earth, ruling the animal kingdom for hundreds of thousands of years. But suddenly, they vanished. Something happened which wiped them off the face of the planet forever. Recent discoveries could now help solve that mystery and offer insight into environmental problems today which threaten the world - and mankind.