Solar and wind power are generally only useful when the sun is shinning or the wind is blowing. But new battery technologies could help renewables become a full-time power source.
Democratic lawmakers have negotiated a five-year extension of federal wind and solar incentives designed to encourage more renewable energy production in the U.S.
Earlier this month, President Obama released the widely anticipated Clean Power Plan, calling it the single most important step America has ever taken in the fight against climate change.
Just a few weeks after Congress cut off an important tax credit for the wind industry, a turbine manufacturer in Pennsylvania announced it will shut its doors. Will more follow suit?