The planet has a fever. If your baby has a fever, you go to the doctor. If the doctor says you need to intervene here, you don't say, `Well, I read a science fiction novel that told me it's not a problem.'... You take action.

The answer is to end our reliance on carbon-based fuels... If we succeed, we create booming new industries, wealth, clean secure energy and maybe we prevent the greatest disaster so far in human history, saving millions of lives while improving billions more. If we fail, basically it's business as usual while things slowly get worse all around us.

During my service in the United States Congress, I took the initiative in creating the Internet.

As important as it is to change the light bulbs, its more important to change the laws

When people flirt with despair about the future, they are less likely to take the actions necessary to safeguard it, focusing instead on the short-term.

I've been dreaming of this moment since I was a kid growing up in Tennessee: that one day, I'd have the chance to come here to Madison Square Garden and be the warm-up act for Elvis.

As president, I will bring all the parties and stakeholders together. I am going to come up with a solution that respects the environment and does not cause an upheaval in the economy.