An Open Letter to the World’s Mayors:

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.

It may be time for you to let go of your printer anxiety.

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.

Some Western companies see China's upcoming crackdown on imported waste as an opportunity to upgrade their operations and use more recyclables in their own manufacturing, but challenges abound.

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."

Compared with the planet's other large tracts of tropical forests, the forests in the Democratic Republic of Congo (DRC) have remained relatively intact — although that soon may be changing.

On Tuesday, China announced further details of its forthcoming national emissions trading scheme (ETS), revealing the rollout will start in the energy sector before full implementation from 2020 onwards.

When U.S. Secretary of Energy Rick Perry signed a memorandum of understanding with Saudi Arabia recently to collaborate on technologies to reduce emissions in the kingdom, it was just the latest of many initiatives making the Middle East an attractive place to do green business — with a cautious approach.