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slash UK slash AI for people. Welcome to Science Talk, a weekly podcast of Scientific American

for the seven days starting March 5th, 2008. I'm Steve Mercky.

This week on the podcast, we're going to Mars, virtually. We'll take a look at the current and future

rovers on the red planet with Steve Squires, Melissa Rice, Andrew Noll, and Michelle Viatty.

Plus, we'll test your knowledge about some recent science in the news.

First up, a brief State of the Ro's report from Cornell astronomer Steve Squires.

He's the principal investigator for the science instruments on the Mars Exploration rover mission.

He spoke at a Mars researcher press conference at the annual meeting of the American Association for the Advancement of Science in Boston in February.

Spirit is now hunkered down for the winter.

Spirit is deep in the southern hemisphere of Mars, and what that means is the winters are pretty tough.

And so what we've done is we have parked the vehicle on a north facing slope

tilting the solar rays towards the sun, changes occur on the Mars.

With the seasons, changes occur as Mars. With the seasons, changes

occur as a consequence of weather systems that come through. Dust can get blown around,

sand can get blown around, and when the rover is motionless for an extended period of time,

you can actually monitor those changes. So we're going to sort of turn her into a weather

station for a period of months. I'll also do other science of the stuff

...