From lava to solar: These renewables are so hot right now
What type of energy do you use? The five dominant sources of renewable energy range from solar and wind to lava and biomass.
Are ocean waves America’s energy future?
The U.S. Navy's wave generator taps the energy potential of the ocean and could help supply remote areas with much-needed electricity.
‘Blue energy’ could be another way to go green
A new source of energy could be found where rivers meet the ocean, using a technique that captures the electrical charge during osmosis.
Communities win with renewable energy
Americans love to compete. It might be baseball, or basketball or...green power? Beginning in 2013, a number of U.S. cities stepped up to the...