China's recent accolades in renewable energy are distracting us from their fossil-fuel dominated reality.
Natural gas is proving to be a formidable challenger to the dominance of coal in the U.S., but not necessarily overseas.
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.
Details on President Obama's big climate speech: how it played out, and why it was so significant.
Call it our year in pictures as 2012 may be remembered for some of these top 10 images.
Global warming almost certainly made Hurricane Sandy worse than it would otherwise have been.
A rogue individual conducting his or her own geoengineering experiment was thought unlikely. Until it happened recently.