Some of the surfaces of the planet's oceans could soon be home to solar panels.
Don't chuck out those old phone batteries just yet.
Facebook and Fujitsu have separately announced plans that they are transitioning global operations to 100% renewable energy.
While global net investments are down, investments in emerging markets are increasing at a significant pace.
Bill Gates's TerraPower is making its next big move on nuclear energy.
What if floors, too, could become valuable new sources of renewable energy?