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.

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

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.

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.

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.

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

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