Sun setting behind hotel (Courtesy of Park Hyderabad)

In the hotel industry, going green means growing revenues

Being environmentally friendly is paying off for more than 400 LEED-certified hotels. See what they're doing and how you can be a better traveler.
Wind turbines silhouetted by sun (AP Images)

Communities win with renewable energy

Americans love to compete. It might be baseball, or basketball or...green power? Beginning in 2013, a number of U.S. cities stepped up to the...
An iceberg in Greenland (© AP Images)

Signing the Paris agreement is a big step toward tackling climate...

Many countries have signed and some have gone further to "join" the Paris agreement to slow climate change — so what's next?
Spanish-style buildings facing basketball court (Guardtop LLC)

U.S. is on the road to solving an urban environmental problem

Los Angeles and other U.S. cities are covering their asphalt roads with a coating that prevents the blacktop from absorbing and radiating the sun's heat.

Cities as policy labs: L.A. cleans up its smog

With the largest fleet of natural gas buses in the U.S. — about 2,200 — Los Angeles has become a leader in cutting carbon emissions.
Micro–wind turbines and solar panels lining the exterior walls at Lincoln Financial Field in Philadelphia (© AP Images)

U.S. sports arenas go green, with the Philadelphia Eagles leading the...

The Philadelphia Eagles, along with many other sports teams in the U.S., are doing their part to protect the environment by going green in their stadiums.
Workmen installing solar panels on building rooftop (U.S. Department of Energy)

Big roofs mean big solar at top U.S. retailers

If U.S. supermarkets and shopping centers covered underused roof space with solar panels, it could generate enough clean energy for several million homes.

White House science adviser wants to hear from you about climate...

If you need answers on climate change, just ask the White House. In November, White House science adviser John Holdren asked the public to submit questions...

A garden path above Manhattan and other clean-air hacks

Cities have an advantage for improving air quality. Their experiences In developed countries can benefit cities in developing countries.