Much of the scientific community has been astonished that their increasingly strong and detailed warnings have been either ignored or attacked.

The great political tragedy of our time is that conservative leaders in America have chosen to use their superior messaging and political skills to thwart serious action on global warming.

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.

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

If Americans in 2100 came to see 12 meters sea-level rise as inevitable by 2200, who can even begin to fathom how the nation would respond?

I've always believed that you should stick as closely to the science as possible. And my biggest advice to reporters has been, if you're doing a climate story, talk to climate scientists. The best climate stories are done by the people who talk to climate scientists.

Hurricane seasons with four or more super-hurricanes, those with sustained wind speeds of 131 mph or more will soon become the norm.