This is CBS, I Am the World. I'm John Batsy with Bob Zimmerman. He keeps the website behind

the black and we travel with Bob from the surface of the planet Earth through the surface

of the planet Mars. Part four of Bob's exploration of the Southern Highlands. Why the Southern

Highlands Bob? What are we looking at? Good evening again. Good evening, John. Well, you

know, when I post cool images all the time from Mars or Carnation or the one that's

written that they don't release on press releases and so don't get covered and they're

always very astonishing. And they tell you a lot about the geology and the climate of

Mars. And a lot of things that people don't know. And so one of the areas of Mars that

I hadn't covered much of is the Southern Crated Highlands. This is in the middle attitude

Southern band where scientists have found a lot of glacial material. But in the Crated Highlands,

I had not covered a lot of images. And so I started to focus on them for a few weeks

back. I posted over the last week four different images from the Southern Crated Highlands because

they have a certain similarity which is incredibly different than the Northern Middle

Attitude Band of Mars, which is in the Northern Lowlands, the Plains of Mars where they thought

maybe an ocean might have once existed. In the Southern Crated Highlands, you don't

get near surface ice like you do in the Northern Lowlands. In the Northern Lowlands, impacts

would be blobby and distorted and it really looks like when the asteroid hits the ground,

you know, things melt like ice and flow like water for a short while and then hot and

ice turns into ice. In the Southern Crated Highlands, you've got much more farm ground

because it's at a higher elevation. It's the ground is higher. And so it's thicker. And

it appears from all the images I posted over the past week and in the Southern Crated Highlands,

any ice layer that exists is farther below ground. And it causes different kind of sublimation

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