John Kerry: “There is a pathway here. There is an avenue. But we do need to increase the leverage.”

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.

The Administration is determined to try to stabilize what has been, particularly recently, a very unstable situation.

We are competing, but everybody has their own approach, which is one of the exciting things here.

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