John Kerry: “It is imperative, I cannot underscore how important it is that this be one nation with all the different parties coming…”

Obviously, we're already seeing ways in which it's going to affect people.

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.

None. We're not paying them for that.

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