The good news is, we have everything we need now to respond to the challenge of global warming. We have all the technologies we need, more are being developed.... But we should not wait, we cannot wait, we must not wait.

The golden thread of reason that used to be stretched taut to mark the boundary between the known and the unknown is now routinely disrespected.

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.

We're still putting 110 million tons of man-made global pollution into the air every single day as if the sky is an open sewer. More than 90% of the extra heat energy is going into the oceans, and that's why superstorm Sandy was so much more destructive, that's why the ice is melting more rapidly, that's why the water cycle is being disrupted and we get a lot more water vapor coming from the oceans into the sky, and that's why we get these enormous downpours and big floods. They happen all the time. Every night on the TV news is like a nature hike through the Book of Revelation.

And nobody is talking about taking guns away from hunters or sportsmen or banning all guns. Nobody is talking about that.

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

I drive a hybrid, and we've changed our light bulbs and windows and installed solar panels and geothermal ground source heat pumps and most everything else.