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.

Unless we stop dumping 70 million tons of global warming pollution into the atmosphere every 24 hours, which we are doing right now ... the continued acceleration of this pollution would destroy the future of human civilization.

I'm naturally an optimist, but my basis for hope is rooted in my understanding of human nature.

Although I have a variety of obligations, the climate crisis is my central concern.

I never like the question about letter grades, but I think Trump is failing. I think that every day there's another set of tweets and another set of controversies, and nothing seems to be getting done that's any good. And there seems to be kind of a policy paralysis in Washington. Even the appointments he's supposed to make as a new president, so I focus most of all on climate, and so my opinion of his time as president is certainly influenced by my opinion of the job he's done on climate. He's tried to move the country in the wrong direction.

I flew on Air Force Two for eight years, and now I have to take off my shoes to get on an aeroplane.

I was recently on a tour of Latin America, and the only regret I have was that I didn't study Latin harder in school so I could converse with those people.