You know the old saying: you win some, you lose some... and then there's that little-known third category.

As human beings, we are vulnerable to confusing the unprecedented with the improbable. In our everyday experience, if something has never happened before, we are generally safe in assuming it is not going to happen in the future, but the exceptions can kill you and climate change is one of those exceptions.

It's a blessing to have work that feels fulfilling.

That we can be e pluribus Unum - out of one, many

The age of printed pamphlets and political essays has long since been replaced by television, a distracting and absorbing medium which seems determined to entertain itself more than it informs and educates.

I think the cost of energy will come down when we make this transition to renewable energy.

There's no such thing as clean coal. It's non-existent. Theoretically, it might be possible, many years from now, to come up with a way to clean it as it's burnt. But there's not a single demonstration project in the United States. [...] Clean coal doesn't exist.