NASA's latest experimental plane, sporting 14 propellers and long, skinny wings, is all-electric and produces zero emissions.
Bill Gates and 20 of the world's top entrepreneurs have a plan for investing in great ideas. They aim to revolutionize the clean energy sector.
The World Bank has signed an agreement with the International Solar Alliance to boost solar energy in developing countries.
Several U.S. cities are leveraging technology to reduce traffic's effect on climate change. Look at the winner of the "Smart City Challenge."
Nearly 200 countries took a key step in the fight against global warming by phasing out a chemical used in air conditioners and refrigerators.
The U.S. Navy's wave generator taps the energy potential of the ocean and could help supply remote areas with much-needed electricity.
Despite day-to-day weather fluctuations, the effects of climate change are becoming more clear. Learn why you should be concerned and what you can do.
A warmer world will raise sea levels and trigger extreme weather events. You can prepare for these events, and the U.S. will help other countries do that.
President Obama is the first sitting U.S. president to project himself into virtual reality with a 360-degree representation of Yosemite National Park.