John Kerry: “I think it's worthy of your attention.”

you cannot just sit there anywhere and wish that things are going to be as they have been historically.

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

People think this is now, you cannot reverse it, it is irreversible.

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.