Check out some of the amazing nature photos submitted by photographers for National Geographic's 2017 Nature Photographer of the Year contest.
The U.S. is connecting Palestinians to water treatment systems that keep people safe and promote jobs. The possibility for peace is growing in the process.
On October 23, International Snow Leopard Day we celebrate the endangered mountain feline, whose health reflects the health of important ecosystems.
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.
Endangered animals may get some protection thanks to new apps developed at the second annual Zoohackathon, co-sponsored by the U.S. Department of State.
Extracting formerly unrecoverable natural gas and transporting it in new ways is changing energy markets and offering greater security around the world.
Since 1985, millions of people have removed a supertanker's weight of plastic trash from beaches as part of the annual International Coastal Cleanup Day.
American Prairie Reserve, a public-private partnership, is bringing back buffalo, birds and big, open sky to the Montana prairie.
Seoul, Sydney and Jerusalem are among cities that took a cue from New York and repurposed their old highways and railways into parks and trails.