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

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.

The last time Earth was 1°C warmer than today, sea levels were 20 feet higher.

Do believe that if we fail to act in time, it will be the single biggest regret any of us has at the end of our lives.

In 2003... the White House conspired with an oil-company funded think tank to block a major government scientific report that sought to spell out the dangers of climate change to Americans.

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

Since 1955 the oceans have absorbed roughly twenty times more heat than the atmosphere.