And "all the above" [what President Barack Obama calls his policy of promoting all forms of domestic energy], compared to "drill, baby, drill," if you actually look at the track record, we've massively escalated the emissions of methane and carbon dioxide.

If you really want people to remain healthy, you can't just throw pills at people once they become sick, which I feel like I was doing as a medical doctor, so I began working on more upstream thinking.

Where does Donald Trump come from - and it's not just Donald Trump. It's a whole movement of right-wing extremism, not just in this country but also in Europe, which is a response to globalization, to the financialization of our economy, you know, to the trade agreements that throw working people under the bus.

I was in a community where we were out demonstrating. We were holding vigils against the Vietnam War, in - like, starting in around '67, I think, before it really exploded as a big movement.

All the more reason we need to stand up for our democracy now. If we're going to solve the crises that are barreling down on us, we need democracy, and our democracy needs to start with an open and inclusive debate. That doesn't mean 20 candidates. There are four candidates who are on the ballot for just about every voter in America.

I'm not opposed to the use of force.

While she [Hillary Clinton] promotes fracking and established an office as secretary of State to promote fracking around the world. The cutting edge science now suggests fracking is every bit as bad as coal.