In the end, we must restore a balance within ourselves between who we are and what we are doing. Each of us must take a greater personal responsibility for this deteriorating global environment; each of us must take a hard look at the habits of mind and action that reflect - and have led to - this grave crisis.

I'm not trying to top anything. I'm trying to be useful, to play a positive role, to serve the public interest.

Most people talk as if Miami and Bangladesh still have a chance of surviving: most of the scientists I spoke with assume we'll lose them within the century, even if we stop burning fossil fuel in the next decade.

Hurricane Sandy is a disturbing sign of things to come. We must heed this warning and act quickly to solve the climate crisis. Dirty energy makes dirty weather.

I am a passionate advocate of getting special interest money out of politics.

Consider what kind of car you get. Buy cars and other products that have the least impact environmentally.

To use a Southern euphemism, our space program has been snake-bit.