American democracy is in grave danger from the changes in the environment in which ideas either live and spread or wither and die.

I strongly believe in the separation of church and state. But freedom of religion does not mean freedom from religion, there is a better way.

There's no doubt that in the last two to three decades, American democracy has been hacked. It was based on the regular harvesting of the wisdom of crowds, but now big sources of special interest money are able to prevent the passage of almost any meaningful reform that's aimed at the public interest.

Future generations may well have occasion to ask themselves, "What were our parents thinking? Why didn't they wake up when they had a chance?" We have to hear that question from them, now.

If there is no cost to be paid for the indiscriminate dumping of pollution into the earth's atmosphere, then it should be a surprise to no one that today we will dump another 70 million tons of global warming pollution into the thin shell of atmosphere surrounding our planet. ... We have to [act] this year, not next year. Mother Nature does not do bailouts.

Scientists with access to data from Navy submarines traversing underneath the North polar ice cap have warned that there is now a 75 percent chance that within five years the entire ice cap will completely disappear during the summer months.

George Orwell once wrote that a false belief sooner or later collides with physical reality, usually on a battlefield.