The science is crystal clear: we humans are the primary cause of global warming, and we face a bleak future if we fail to act quickly.

Protecting dozens of major coastal cities from future flooding will be challenging enough-rebuilding major coastal cities destroyed by super-hurricanes will be an almost impossible task.

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

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?

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

We created a way of raising standards of living that we can't possibly pass on to our children.

By the end of the third decade of this century, all of American life - politics, international relations, our homes, our jobs, our industries, the kind of cars we drive - will be forever transformed by the climate and energy challenge.