Two thousand fourteen was the planet's warmest year on record. Now, 1 year doesn't make a trend, but this does: 14 of the 15 warmest years on record have all fallen in the first 15 years of this century. Now, I've heard some folks try to dodge the evidence by saying they're not scientists, that we don't have enough information to act. Well, I'm not a scientist, either. But you know what, I know a lot of really good scientists--[laughter]--at NASA and at NOAA and at our major universities. And the best scientists in the world are all telling us that our activities are changing the climate, and if we don't act forcefully, we'll continue to see rising oceans, longer, hotter heat waves, dangerous droughts and floods, and massive disruptions that can trigger greater migration and conflict and hunger around the globe. The Pentagon says that climate change poses immediate risks to our national security. We should act like it. And that's why, over the past 6 years, we've done more than ever to combat climate change, from the way we produce energy to the way we use it. That's why we've set aside more public lands and waters than any administration in history. And that's why I will not let this Congress endanger the health of our children by turning back the clock on our efforts. I am determined to make sure that American leadership drives international action. In Beijing, we made a historic announcement: The United States will double the pace at which we cut carbon pollution. And China committed, for the first time, to limiting their emissions. And because the world's two largest economies came together, other nations are now stepping up and offering hope that this year the world will finally reach an agreement to protect the one planet we've got. And there's one last pillar of our leadership, and that's the example of our values. As Americans, we respect human dignity, even when we're threatened, which is why I have prohibited torture and worked to make sure our use of new technology like drones is properly constrained. It's why we speak out against the deplorable anti-Semitism that has resurfaced in certain parts of the world. It's why we continue to reject offensive stereotypes of Muslims, the vast majority of whom share our commitment to peace. That's why we defend free speech and advocate for political prisoners and condemn the persecution of women or religious minorities or people who are lesbian, gay, bisexual, or transgender. We do these things not only because they are the right thing to do, but because ultimately, they will make us safer.