[Recipients of grants must periodically give updates on their progress, often at scientific conferences, in order to justify continued funding. But conferences are more scientific show-and-tells than mandated roll calls, according to Head.] You really want to go to show all your neat stuff, ... It's not like I get on a plane to go to Houston because I have to, it's because I'm excited.

We see a cold, hard, brittle outer layer, but a lot of activity underneath. Does it represent an ocean under there, or warm ice moving around?

We homeowners need help. We need immediate relief.

It's an exciting place. That's what exploration is all about. You go out there. It isn't A. It isn't B. It isn't C. It's D, none of the above.

What we found was that the glaciers were formed from snow brought from the polar regions.

The findings are important because they tell us that Mars has experienced big climate changes in the past, the kinds of climate change that led to the Great Ice Age here on Earth. The findings are also interesting because this precipitation pattern may have left pockets of ice scattered across Mars. This is good information for NASA as officials plan future space missions, particularly with astronauts.