I don't have the illusion that there's any position or role in the world with as much potential for bringing about change as that of president of the United States.

Every day we put another 110 million tons of global warming pollution into the sky as if it's an open sewer, and it's still building up. And the scientists tell us it's a race against time. We've stabilized emissions globally now for the last three years, but they need to start coming down quickly. We've got the momentum, we've got the wind in our sails, we're gonna win this.

The ten hottest years in the atmospheric record, going back only 160 years, have been in the last eleven years.

The center of the earth is about a million degrees.

Someone who expresses a view that is contrary to the view of the overwhelming majority should be allowed to stand undisturbed as a monument to our commitment to free speech.

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.

It's not at all new for wealthy and powerful interests to try to hide the ball and ignore independent analyses of relevant facts.