Green diplomacy: Racing to plant a forest

Running a 10-kilometer race will burn calories and improve your health. Beyond those benefits, an annual footrace contributes to reforestation and erosion prevention in...
Rio 2016 Olympic gold medal on ribbon (© AP Images)

You’ll never guess what’s in these stunning Olympic medals [video]

Athletes from around the world will be vying for Olympic and Paralympic medals during this year's games in Rio. But these medals have some special details.
Woman touching digital map (Shutterstock)

City transit systems look to the future

Several U.S. cities are leveraging technology to reduce traffic's effect on climate change. Look at the winner of the "Smart City Challenge."
Dolphins swimming among a school of sardines in the ocean (© Getty Images/Dmitry Miroshnikov)

Our Ocean 2016

Join world leaders as they discuss ways to protect our ocean for the future of the world during the #OurOcean conference.
Aerial view of solar panels surrounded by forest on island (SolarCity)

U.S. island in South Pacific goes solar

Remote Ta'ū Island in American Samoa switched from burning 300 gallons of diesel fuel a day to nearly 100 percent solar power. How did they do it?
Man walking with bag of dates (Alaa Badarneh for USAID)

With water projects in West Bank and Gaza, U.S. cultivates hope

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.
Clouds floating in the sky above a wide expanse of prairie land (Dennis Lingohr/APR)

A new kind of park emerges on the prairie

American Prairie Reserve, a public-private partnership, is bringing back buffalo, birds and big, open sky to the Montana prairie.
Electric car plugged into charging station (© AP Images)

Electric cars could dominate some city roads sooner than you think

Falling costs for the technology powering electric cars and stricter emissions regulation are among the reasons electric vehicles are becoming more popular.

Responding to the global challenge of climate change

What will you be doing in 2025? The United States is going to be producing 26 percent less greenhouse gas than it did in 2005.