Neil deGrasse Tyson

towards Asia, there's some dispute about whether they went south or north, but went into Asia, populated Asia, then they kept going.

We had Zika and we had West Nile and we had Ebola and we had COVID.

All I can say is whatever it is, we ain't ready for it.

So...

We still have anti-vaxxers running around, you know, I don't trust scientists.

This is during the ice age.

How do you get an ice age?

I saw a YouTube video I'm not gonna take you know, it's like what just so Well, it used to be you had to get to go to school you had to get there are certain vaccines you had to get You know, I'm gonna tell you story and I don't want you ever forget this story.

Water evaporates from the oceans, goes into the sky.

It's so cold, it comes back out as snow.

The snowflake lands on the countryside and never goes away.

Okay 20,000 years ago.

Because the world is below freezing.

We're in the cave.

Yes Do the life expectancy was

So the snowflake is just there.

Had it been rain, the water would have just worked its way back to the ocean, and you'd have this circulation of water.

10 years.

But during the Ice Age, you drain the ocean of its water, deposit the water on land, it never returns to the ocean.

15 years.