2014 is set to be Europe's warmest year, a record made much more likely by global warming.
New study shows that electric vehicles' environmental friendliness depends on where the electricity comes from.
While November didn't set a global hot mark, 2014 is still on track to be the warmest year on record.
New interactive map shows how energy production in U.S. has grown since 1993.
State mandates and tax incentives make California the most popular state for buying an electric car.
Low oil prices means people will drive more and buy less efficient vehicles, increasing CO2 emissions.
The unusual heat in California was a key driver of the unprecedented impacts of its latest drought.
The Obama administration's plan to cut CO2 emissions moves to next step.
American political dysfunction could keep legally binding rules out of the next climate pact.
CO2 emissions warm the planet faster than previously thought, and their impacts linger for centuries.
The U.N.'s WMO is the latest agency to announce that 2014 is likely to be the warmest year on record.
New Yorkers and Bostonians will pay higher natural gas prices this winter because of a pipeline crunch.
Negotiators are about to gather in Lima to thrash out the details of the first post-Kyoto climate treaty.
How CO2 in different modes of transportation stack up, plus how weather affects Turkey Day travel.
How people get their electricity and where it comes from is on the brink of major change in the U.S.
This week in climate news features lake effect snow, a year of record heat, cool animations & more.
The U.S. is technologically able to kick its fossil fuels addiction by 2050, report says.
2014 is even more likely to become the warmest year on record, with record cold years a thing of the past.
On the heels of its climate pact with the U.S., China pledges to cap the amount of coal it burns by 2020.
Intense farming methods may be leading to greater seasonal swings in the global carbon cycle.