I smoked pot in college and in the Army.

I wrote newspaper articles professionally for seven years, and I love newspapers. I'm hopeful that new business models will emerge that allow the newspaper culture to genuinely thrive in the digital age.

The oil industry has outpaced the building of a public consensus of the implications of climate science.

What's at risk [in 100 years] if we do not take action, truly is the survival of civilization as we know it... Literally that is the case. We have seen global warming so far of just a little bit less than one degree Celsius and look at what's happened. Superstorm Sandy. Boulder Colorado. All these fires. Hurricane Irene one year before.

It's as if we think the laws of physics are subject to debate and amendment and political contributions can sway the laws of physics.

I have absolutely no plans and no expectations of ever being a candidate again.

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