There are skeptics who do not come to their view because they have a source of income from carbon polluters. I don't mean to imply that they're all in that category at all. There are also those who are also not motivated by ideological resistance for any role of government. But I don't know of any arguments or any presenters of arguments that overturn the consensus that I think have gained any legitimacy.

Even if we give first priority to the destruction of terrorist networks, and even if we succeed, there are still governments that could bring us great harm. And there is a clear case that one of these governments in particular represents a virulent threat in a class by itself: Iraq. As far as I am concerned, a final reckoning with that government should be on the table.

The global warming deniers persist in this air of unreality. After all, the entire north polar icecap, which has been there for most of the last 3 million years, is disappearing before our eyes. Forty percent is already gone. The rest is expected to go completely within the next decade. What do they think is causing this?

The climate crisis is not a political issue; it is a moral and spiritual challenge to all of humanity. It is also our greatest opportunity to lift global consciousness to a higher level.

My parents were true believers in the efficacy of American constitutional democracy, and I was thoroughly inculcated with reverence for what we the people are capable of doing. The complication in that simple narrative is that as I got older, the Vietnam War shook my confidence in how our democracy was working. I ended up serving in that war, but it started with a lie, and I was very proud of my father for being one of its earliest opponents.

The interior of the earth is extremely hot – several million degrees.

The presidency is more than a popularity contest.