Washington, D.C., to run entirely on renewable energy by 2032

Dead fish will soon be powering Norwegian cruise ships

Puerto Rico plots out total switch to green energy by 2050

China's 'artificial sun' was briefly the hottest spot in our solar system

Scientists transform sunlight into a liquid fuel that can be stored for 18 years

Chernobyl is producing energy again

Bacteria help solar panels beat cloudy days

How London's 'lost' underground rivers could help curb carbon emissions

California becomes first state to require solar panels on new homes

Portugal shows off in March, flirting with 100% renewable energy goal

More than 100 cities get 70% or more of their energy from renewables

Today's tobacco field, tomorrow's solar farm