There's a limit to the growth of solar, but we're not even close to reaching it.
New high-tech fabrics can clean themselves -- just add sun.
Three unrelated industries have a lot more shared history than we thought.
Will Donald Trump lash out at Leo next?
A new U.N. report offers insight into countries' differing approaches to the clean energy sector.
A new study shows just how much CO2 -- and lives -- we'd save if we just cut our meat consumption in half by 2050.
Watch about 150 activists disrupt the auction for offshore drilling leases in the Gulf of Mexico.
McConnell is advising states to "wait and see" before complying with the centerpiece of Obama's climate agenda.
California can claim first place in just about every clean-energy category.