Colorado's wildfires have become so bad that fire departments are increasingly reluctant to send firefighters to the front line, a new documentary says.
Carbon pricing and public education will make a difference, while divestment "doesn't do anything to remove a single ounce of CO2."
"We knew that if we put it on our school and we got the word around, then other schools would do it," says a student at Mackintosh Academy.
U.S. Adm. Bill Gortney, commander of NORAD/U.S. Northern Command, says increased Russian air patrols and melting ice in the Arctic are on his radar.
- The new target was submitted to the UN Framework Convention on Climate Change Tuesday. It is part of a plan for a new international treaty to be hammered out in December in Paris.Read More
More research is needed regarding geoengineering techniques that aim to slow climate change, some scientists say.
A study says global warming will lead to "unprecedented drought conditions" -- the worst since the 1100s.
Researcher: By 2050, Colorado's "average summer is going to be as hot as pretty much the hottest summers that we’ve seen."
The coral reveals when Pacific trade winds slow, and when that happens next, the Earth may see a sudden rise in temperatures, according to a researcher in Boulder.
A longer wildflower season may have far-reaching ripple effects for birds, bees -- and even fruit trees.