Climate Change
NASA launches U.S.-European satellite mission to monitor global sea levels
A U.S.-European mission sent a satellite into space to collect information about rising sea levels that will help scientists and first responders.
America has deep roots in reforestation
Did you know that reforestation programs have been around in the United States for more than 100 years? Learn about that legacy and how it helps the world.
U.S. relies on innovation to reduce emissions
The U.S. is formally withdrawing from an international climate accord but will reduce emissions through innovation without compromising economic growth.
5 myths about wind energy
Wind energy has come a long way. Today it's more efficient and cheaper than ever. What do you think you know about wind energy that isn't true?
Everything is big in Texas, including wind power
It only took a few years — and good planning — to make big oil producer Texas the leader in U.S. wind energy.
This is where the world will get its electricity in 2040
The worldwide mix of fuels used to generate electricity is shifting, with a greater reliance on renewable energy sources and natural gas.
Our favorite Obama travel photos
View some of President Obama's travels to other countries. He met dignitaries and people in all walks of life and saw treasured spots.
Solar power booms in Africa as new technology rolls out
New solar technology could help provide cheap power to many of the 600 million people in Africa who currently lack access to reliable electricity.
Airports look to the sun to save money
Airports around the world are looking sunward to power their facilities — and they find solar energy makes good business sense.