A loophole in carbon-accounting rules is spurring a boom in burning wood pellets in European power plants.

Insurance giant AXA has announced a quadrupling of its 2020 green investment target from $3.53 billion to $14.13 billion as the company's CEO warned more than 4 degrees Celsius of warming this century would make the world "uninsurable."

Previous efforts to restore former coal mine sites in Appalachia have left behind vast swaths of unproductive land.

In recent months, thousands of groups across the United States — including cities, states, companies, tribes and nongovernmental organizations — have launched initiatives in support of the Paris Agreement.

The Beaufort Gyre, a key Arctic Ocean current, is acting strangely.

Far down the Alaskan peninsula, where it curves into the Bering Sea, lies the remote Izembek National Wildlife Refuge.

The billowing stainless steel forms of Frank Gehry’s Pritzker bandshell seem to float up from behind the 3.5-acre Lurie Garden in Millennium Park, backed by Chicago’s celebrated skyline.

Bitcoin's phenomenal rise this year may be making speculators very rich, but some observers say it's terrible for the environment.

Some sources of carbon dioxide emissions are set in stone, somewhat literally.

A huge barrier designed to protect Venice from sea level rise and storm surges is set to be operational next year.