The Internet empowers individuals to play a more active role in the political process, as Obama's campaign has manifested.

The struggle against poverty in the world and the challenge of cutting wealthy country emissions all has a single, very simple solution... Here it is: Put a price on carbon.

Global warming is real and human activity is the main cause. The consequences are mainly negative and headed toward catastrophic, unless we act. However, the good news is that we can meet this challenge. It is not too late, and we have everything we need to get started.

The American people overwhelmingly want our troops out of Iraq. They want the federal government to take real and immediate action to combat global warming and to significantly expand support for stem cell research. Democrats almost unanimously support the people's wishes onthese crucial issues. Republicans don't.

I'm not trying to top anything. I'm trying to be useful, to play a positive role, to serve the public interest.

This is by far the most serious crisis civilisation has ever faced.

Plant trees, Lots of trees