I have faith in the United States and our ability to make good decisions based on the facts.

Today I challenge our nation to commit to producing 100 percent of our electricity from renewable energy and truly clean carbon-free sources within 10 years.

Well-established theories collapse under the weight of new facts and observations which cannot be explained, and then accumulate to the point where the once useful theory is clearly obsolete.

I feel passionate about solving the climate crisis.

You need to really scrub your investment portfolios, because I guarantee you, many of you are going to find them chock-full of subprime carbon assets.

I will tell you that what gives me a sense of joy is having work to do that justifies pouring every ounce of energy I have into it. That's really a blessing to have in your life. And it gives you energy back when you have the privilege of doing work that makes you feel that way.

The task of saving the earth's environment must and will become the central organizing principle of the post-Cold War world.