The International Energy Agency says that within the next five years humanity is likely to fritter away its last chance of avoiding dangerous climate change.

Also, the world's still giving more support to fossil fuels than renewable energy—six times as much, when measured in state subsidies.

The Obama administration wants to open up offshore areas in the Gulf of Mexico and Alaska for drilling in the next five years.

An asteroid came within 202,000 miles of Earth, which in space terms is very, very close—closer than any other piece of space rock has been in more than 30 years.

China and the U.S. are fighting about tariffs on solar equipment. The U.S. wants China to lower its tariffs; China says that'll hurt the industry.

California has one gigawatt of solar power installed. That's a lot—more solar power than France, China or Belgium has.