This is

CBS Island The World. I'm John Bachelor with David Livingston, Dr Space himself.

This is Hotel Mars episode and it includes not only Venus but

also Mars so we're going to Venus via Mars thanks to two authors of a piece in Nature magazine, this is the peer-reviewed top of the

pile science magazine on planet, about Venus via Mars.

The title is associated.

Venus water loss is dominated by HCO with Little Plus Mark,

disassociative recombination.

What that means, we're very pleased to welcome Bethan Gregory and Aaron Kanji, two of the authors

along with Mike Chaffin and Jay Dagen, R. D.E.

Elliot H. Gullier and R. V. Yelli, publishing a piece about where did the water go.

Aaron and Bethan, a very good evening to you,

it's a great pleasure to talk about Venus and Mars together.

I want to put all of us together these three rocky and wet planets

that are so promising.

Venus in the morning sky and Mars, the ambition of lots of rocket boosters

in this century.

Aaron, I start with, I learn from you

that if you spread all the water on Earth out,

we have about three kilometers of water thickness on planet Earth.

Did a similar amount of water exist at some point on Mars and Venus?

Good evening, Aaron.

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