This bad boy is 7,100 times worse for the climate than carbon dioxide, and it persists in the atmosphere for more than 500 years.
In the blustery Midwest, power agreements with new wind farms are being signed for even less than gas plants. Wind is breathing down the necks of coal and nuclear too.
The U.S. is spending more than ever to fight blazes, and Australia will need to double the number of firefighters it employs to help keep pace with worsening fire seasons.
Vladimir Putin has proposed giving amnesty to some activists and political prisoners, including Greenpeace protesters who scaled an offshore drilling rig in September.
This is the kind of pollution that causes green slime in the Great Lakes and dead zones in the Gulf of Mexico.
To slow down the rate of species extinction, a U.N. biodiversity group recommends a return to traditional farming techniques.
The Tories are offering big tax breaks to fracking companies. Meanwhile, anti-fracking protesters get rowdy in Romania.
Eight governors from the Northeast are asking the EPA to crack down. Meanwhile, the Supreme Court is gearing up to hear a big air-pollution case.
Wind energy companies will be able to get 30-year "take" permits for eagles if they implement “advanced conservation practices” to help protect birds.