The Clever Plan to Mine Lithium From Geothermal Power Plants' Wastewater

Regardless what you think about the future of phones or wearables or cars, there is one thing nearly everyone can agree on: We will need more batteries. And for that, we'll need more lithium. One startup has its eyes on a new source of lithium: the wastewater from geothermal power plants. » 9/08/14 4:36pm 9/08/14 4:36pm

Airports Will Steal Summer's Heat to Thaw Frozen Winter Runways

The winter months are some of the busiest travel times of the year, but they're also the most likely time for an airplane to be delayed. The culprit? Icy runways. Wouldn't it be nice and efficient if we could take some of the excess summer heat, save it, and use it to thaw out airports in the winter? Some of the… » 5/18/12 6:40pm 5/18/12 6:40pm