This is CBS, I In The World, I'm John Batcher with Professor Carlos Harameo.

He is riding with his colleagues in Nature magazine, revelations about the neotropical

rainforests before and after the strike of the asteroid comet at what is now the Yucatan

and the shallow sea that ended the dinosaurs to our understanding, but also transformed

the, what the dinosaurs fed on, the forest, the jungle.

A professor, if I read this correctly, your sampling from Columbia gives you a picture

of the diversity over the next six million years, to about 60 million years, and over

the next eight million years to about 58.

But what about the forest in Patagonia to the South?

What about the forest in Montana to the North?

What about the forest in New Zealand?

Do we know what they looked like in the recovery from the asteroid?

Well, from the beginning, I would respect that the tropics to suffer far more than temperate

forest, to the impracted self, because the forests are now adapted to winters, while temperate

forest they are.

As you mentioned at the beginning, the first phases of the aftermath was a lot of this

long winter, and I would respect from the beginning the tropics, the tropical plants could

not cope very well with a winter, because they never experienced a winter.

So you see a differential effect from the tropics to temperate regions on the extinction levels

that this event caused.

So the extinction levels in Patagonia and New Zealand are not as high as in the tropics.

And if you see the overall composition of the forests, in the tropics with the transformation

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