Climate Change

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.

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...

Many countries have signed and some have gone further to "join" the Paris agreement to slow climate change — so what's next?

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.

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.

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.

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

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...

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