I'm John John Bachelor.

This is Hotel Mars episode and with David Livingston, my colleague and friend and co-host,

and we're exploring a particular planet that once upon a time had very low

oxygen level in the water, in the oceans and that planet turned into New York City.

So, that's a fun discovery, but now Diori, we're going to play a game.

The game is, we give you and your colleagues an unlimited budget.

What is it that you want to do next with your

revelation of that about 400 million years we oxygenated and up into that point

we were doing fine with very low levels.

What do you do next, Yuri?

So I think that an interesting aspect that, you know, needs to be to be exposed

is why the level of oxygen, you know, were finally rising. And there are several hypotheses

there that associate the, you know, rising level of oxygen

with evolutionary gaps that were maybe driven

by the supply of nutrients to the oceans like phosphorus or maybe with the

accommodation space for sediments on continents so I you know said before that in order to have oxygen in the atmosphere,

to have oxygen in the atmosphere,

it's not enough to have photosynthesis working.

You need to bury organic material.

So what they would do is try to reconstruct

the history of,

or sorry,

...