Group ranks major airlines based on fuel efficiency, but there are many unknowns about how airlines burn fuel.
Report authors respond to reader comments and questions regarding our 2013 Climate-Friendly Cars report.
Year-end numbers for media coverage of climate change show Climate Central led the pack.
Could existence of wind turbines slow the planet’s winds to the point where they couldn’t generate any more energy?
Severe weather has been clobbering insurance companies, and the headlines just keep coming.
Ranchers out West are being forced to move their cattle eastward in order to escape extreme drought conditions.
Richard Nixon, who resigned 38 years ago today, was a champion of protecting the environment.
A summer full of bizarre weather in the UK, with torrential rain and now scorching sun, has created hurdles for the Olympics.