John Kerry: “We threw away the symbols of the war. I'm proud I stood up and fought against it.”

It's a matter of mathematics and physics, not politics, not ideology. It is a response to the science.

Only one group of people, and they are here in Washington, and some of them spread around the country.

no country can solve the climate crisis alone. This requires multilateralism automatically.

the U.N. Finance Analysis suggests that it will cost trillions of dollars. Maybe $2.5 to $4.5 trillion a year between now and 2050.