John Kerry: “I applaud the appointment of Ambassador Holbrooke as Special Envoy to Pakistan and Afghanistan as an important step…”

We lose about 8 million people a year to the quality of air, lack of quality actually, air pollution.

The message is, let's find a way to be able to make sure when we fly, we're not leaving emissions that we cannot capture.

I absolutely stand. On the day that that report came out we made it crystal clear, in a release that we put out, that that never took place.

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.