The U.S. could meet its electricity needs 100 times over with solar and 10 times over with wind.
Corey Lewandowski led a double life as a solar power lobbyist while publicly fighting taxpayer-funded clean-energy projects.
Solar advocates are suspicious.
The government thinks it doesn't have to spend a dime on it.
One scientist says, “I’ve never seen such a warm, crazy winter in the Arctic."
The loss of Arctic sea ice cover has spurred a sharp rise in shipping traffic -- as well as coast guard rescue missions.
In parts of Oklahoma and Kansas, the tremor risk is now on par with quake-prone California.
America's 300,000 fracking wells pumped out 4.3 million barrels per day in 2015.
Each time you hit snooze, the alarm clock app gives $1 of your money to a wildlife charity.