Is your new year still falling flat? You are not alone. This year millions will be diagnosed with low energy

But planet fitness has the cure boost your energy with tons of equipment in our clean and spacious clubs for one dollar down in ten dollars a month

No commitment against many top dealers January 31st. See home club for details. This is CBS I In The World. I'm John Bashar with Thomas Halliday paleontologist evolution biologist

Writing other other lands a journey through earth's extinct world

41 million years ago

It's warm. It's very warm. There's no ice on the planet to be found

We're looking at the dawn of the recent to how to understand this

Now we've paid attention to land creatures

Thomas takes us to see more island and gigantic penguins. Where is it Thomas? Where was it then and where is it today?

Wow, fortunately, it hasn't actually moved all that much in the intervening millions of years. See more island is

Is today a small island off the west Antarctic peninsula. So it's the site of Antarctic research bases

It's that the west Antarctic peninsula is that spit of Antarctica which stretches up towards South America

And at the time it was you know still part of this

This peninsula and what was different of course is at that time it was a little bit closer to South America and

The stretch of water that currently separates them which is today known as the Drake passage had only just opened up

And that was something was going to have huge impacts on the environment of particularly Antarctica but the world as a whole

And by opening up the Drake passage you get the

Second the second polar current which is this oceanic current that goes all the way around Antarctica and doesn't get stopped by any

Uh any sort of continental landmass and because this opened up

This is the point of which Antarctica begins to cool down you get a separation of the weather system of the South South pole and prevents the sort of exchange of war warmth with the tropics

um

And as such you know glaciers begin to emerge in the mountains of Antarctica and spread out across the whole of that country

...