Energy-efficient LED lightbulbs are becoming affordable and being designed to resemble the incandescent bulbs of old.
The Fort Collins City Council voted to ban fracking within city limits. Colorado Gov. Hickenlooper says the move is illegal and the state will sue.
Rep. Ed Orcutt sends a testy note to a bike shop owner, claims cyclists are a significant cause of CO2 pollution.
Bike advocates say the law would apply even "if you get hit by a drunk city employee."
Pollution from volcanoes has been reflecting heat away from Earth, slowing global warming, a new study suggests.
Americans overwhelming support policies like banning big sodas and subsidizing fruits and veggies, according to a new poll.
The company says it'll spend $6.5 million over five years to help Guatemalan farmers grow more sustainable beans.
Australia's Climate Commission says global warming caused its harsh summer of record-breaking heat, floods, and bushfires.
Agricultural poisons are reducing the quality and quantity of sperm in men all over the globe, especially farm workers, according to a new study.