Climate change is rapidly pushing the Arctic into a new and less stable state.
A new study shows air pollution from Canada's oil sands could be 4 times higher than previously reported.
As rich countries have foundered, India and China have emerged as global leaders in tackling warming.
Here's why the March for Science was the perfect vehicle to talk about climate change.
Over Trump's first 100 days, we're going to show what science tells us about our warming world.
The world's marquee carbon dioxide observatory just recorded a major climate milestone.
Removing carbon dioxide from the air may be the most effective way to meet the globe's ambitious climate goals.
The amount of carbon dioxide in the atmosphere has a strong correlation with rising temperatures.
Since the first Earth Day in 1970, the average annual temperature in every state has climbed.
Communities across the West will have to adapt to living with the ever-increasing threat of wildfires.
March was the second hottest March on record, according to NASA, behind only 2016, a mark of rising global warming.
Major oil companies, feeling pressure from low oil prices and global climate policy, are fleeing Canada's oil sands.
U.S. energy-related carbon pollution fell in 2016, part of a decade-long trend as utilities use less coal.
On the eve of the March for Science, organizers have started hinting about what they plan to do next.
The expunging of climate information from government websites continues to march forward.
Coal use in the U.S. fell 9 percent in 2016, even as the Trump administration seeks a coal industry revival.
Climate change is helping drive warm water into the eastern Arctic Ocean, altering it in unprecedented ways.
Dozens of GOP-sponsored bills have been introduced in Congress that seek to hamstring federal climate action.
Climate change is stirring life in the Arctic Ocean as thinning sea ice lets in more sunlight.
President Trump signed an executive order Tuesday aiming to overturn federal climate policies.