Conservative Denyers and Delayers are the main reason America lacks the consensus and the political will to take up the fight against catastrophic climate change.

The best thing about improvements in health care is that all the climate-change deniers are now going to live long enough to see how wrong they were.

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?

The United States could dramatically reduce its carbon emissions per kilowatt-hour without raising its overall energy bill.

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

Replacing half of the U.S. ground-transport fuels with hydrogen from wind power by 2050, for example, might require 1,400 gigawatts of advanced wind turbines or more... replacing those fuels with electricity might require less than 400 GW.

We have been getting rich by depleting all our natural stocks - water, hydrocarbons, forests, rivers, fish and arable land - and not by generating renewable flows.