That means we're already halfway to the "safe" benchmark of 2 degree C.
Large wildfires are now more common and destructive.
Climate change will make danger days a lot more common over the next 15 years.
Even if the world manages to limit global warming to 2 degrees C, sea levels may still radically reshape the world’s coastline.
Watch one of the first climate models in action.
Climate scientists curtailing their air travel would only make a tiny dent in carbon emissions, but a new paper argues they should do it anyway.
The recent bout of winter weather has painted the middle of the country and the East Coast in white, while the West has been downright hot.
Climate change is a perfect example of an issue on which reporters should be "truth vigilantes," challenging the faulty "facts" spread by climate skeptics.