That Time The Ocean Lost (Almost) All Its Oxygen

This is the story of how our planet rescued itself from extreme conditions in the Cretaceous Period, at the cost of essentially suffocating the oceans for half-a-million years.

More Episodes

What Will Earth Be Like 300 Million Years From Now?

We’re taking a look towards the deep future. After all, the story is far from over.

What Was The Earliest Surgery?

When did we start practicing medicine in its varied, complex forms?

How Snake Venom Sparked An Evolutionary Arms Race

For some, the rise of venomous elapid snakes was an almost apocalyptic catastrophe.

Other Shows You May Enjoy