The social network also raised its companywide renewable energy target to 50 percent by 2018.
The company is spending $600 million to build a data center that will one day be 100 percent powered by renewable energy.
A new dome-shaped add-on to wind turbines may help them generate more power and bring construction costs down in the process.
Divestment is working. Starting in 2016, the coal industry is set to lose billions of dollars.
Taxing the rich to give the poor clean power.
The clean energy industry grew by 18 percent in a single year. Worldwide, the sector is booming.
Due to environmental regulations, natural gas is now the cheaper option.
Fossil fuel plants currently drain billions of dollars of water—switching over could help save the thirsty state.
The latest, sleekest entrant into a kind of gadget we're calling End Times Tech.
Burning oil will probably destroy the environment, but why find out?