Last year saw the second-biggest spike in CO2 levels on record, meaning we're even less likely to meet goals for keeping climate change in check.
New technology uses radar to differentiate between pedestrians, cyclists, and other cars, and triggers auto-braking if a collision is imminent.
Sales of frozen hamburgers are way down in the U.K., while sales of frozen fake burgers are way up.
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.
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