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Astronomycast, episode 221 from Monday, February 21, 2011.

Geomorphology.

Welcome to astronomycast, our weekly facts-based journey through the cosmos.

We help you understand not only what we know, but how we know what we know.

My name is Fraser Cain, I'm the publisher of university today,

and with me is Dr. Pamela Gay, a professor at Southern Illinois University,

at Pamsville.

Hi Pamela, how are you doing?

I'm doing well, how are you doing, Fraser?

Good, finally warming up a little.

So, good.

Yeah, I'm getting ready to come out of the Canadian deep freeze in another summer.

...