Catalyst

We live in a spectacular world. And yet everything we have ever seen, felt, or touched adds up to just five per cent of everything there is. Prof Tamara Davis meets scientists leading the hunt for the dark universe.

Australia was once home to extraordinary animals known as Megafauna. These giants lived here for millions of years - but what became of them? A team of scientists re-open this paleolithic cold case.

Duration: 48 minutes 19 seconds48m Australia was once home to a group of extraordinary animals known as Megafauna. These giants lived here for millions of years, but in a blink of time, they disappeared. So what became of them?