President Bush's proposal to focus our resources on sending humans to Mars is intriguing, but it is not the most compelling reason that Americans ought to focus our interest on the Red Planet.

I am going to leave everything on the field. I am going everywhere, and I am going to listen to everybody.

Renewable energy also creates more jobs than other sources of energy - most of these will be created in the struggling manufacturing sector, which will pioneer the new energy future by investment that allows manufacturers to retool and adopt new technologies and methods.

I talk about reducing our dependence on foreign oil. If we're buying electricity from a solar-thermal plant in Tijuana, I'm not sure we should say that's evil. If we are buying wind power from Alberta, I don't have a huge objection to that.

When we design our national R&D programs, we ought to ensure a place for the small, the new, and the cutting-edge.

If this ice melts in Greenland it can shut down the Gulf Current.

But most importantly, we can all be donors. It does not matter how old you are, your race, where you live; all of us can give the gift of life.