You do up your seatbelt and check your rearview mirror.

You've got airbags and anti-lock brakes.

Everything in your car is designed to protect you, but none of that will protect you from

this.

The air you're breathing.

According to research, one of the most polluted areas in London is inside your car.

That's why the U-Lez is expanding across all London boroughs.

Search U-Lez 2023 to find out about the support available.

Let's clear the air.

This is CBSI in the world.

I'm John Batsworth.

David Livingston, Dr. Space, of the Space Show.

He is with me on Hotel Mars and we're actually talking about Mars for once.

With Professor Alexis Rodriguez of the Planetary Science Institute, he with his team have discovered

events that happened 3.4 billion years ago on the surface of Mars, Northern Hemisphere.

They discovered these things because their results of the event, the strike of an asteroid,

is all around the landing zone of Viking 1 in 1976, which was unaware of all of these

events until it landed.

I'm going to start with David's question of the remarks that the professors helped us

understand so far about the reasoning of this event.

David, you have a question for the professor.

Yes, professor.

...