John Kerry: “the PMD piece, it was a total punt.”

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

I think I am pursuing common sense for political right, political left, republican, democrat.

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.

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