In 2005... Mumbai, India, saw that country's most intense recorded instance of rainfall - 3 feet of rain in twenty-four hours.

Time is short. We have at most a decade to sharply reverse course.

You must become a climate champion, a single-issue voter. You must take whatever action you can. You must use whatever influence you have wherever it would make a difference, even if it is only to educate the people around you.

On our current path, all our great Gulf and Atlantic coast cities are at risk of meeting the same fate as New Orleans.

On moral grounds, I think that if you believe a certain outcome is a very possible outcome, you have an obligation to tell people that. With global warming, the probability of a bad outcome if we stay on our current emission trends is incredibly high. If you know a bad outcome is likely to happen, what right do you have not to communicate that? You go into a doctor's office, what are they going to do - not tell you the diagnosis?

The entire western Siberian sub-Arctic region is melting, and it has all happened in the last three or four years.

Would PBS go so far as to give air time to an even more extreme kind of disinformer, a Holocaust denier?