John Kerry: “It will be up to this committee to exercise oversight and ask tough questions to find out whether other changes are…”

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

Ninety-eight percent of all the scientists in the world agree----

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

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