Water shortages caused by drought in Iran are further compounded by failed government policies and corruption. As the crisis worsens, Iran's security forces are arresting scientists trying to help.
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.
Texas may be known for its oil and gas, but one city there plans to get nearly all of its electricity from renewables, such as wind and solar.
A year has passed since nearly 200 countries came together to adopt the historic Paris agreement on climate. Check out what has happened since then.
New solar technology could help provide cheap power to many of the 600 million people in Africa who currently lack access to reliable electricity.
Homeowners and businesses that rely on solar panels and wind turbines have cheaper electric bills, thanks to a system called “net metering.”
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.
Cities around the world are getting granular with climate data, using a new tool called PREP to prepare for the local effects of climate change.
By 2017, Google expects to power its massive data centers and offices with 100 percent renewable energy, everywhere in the world.