Energy & Green Tech

Smart windows that go from clear to dark in under a minute

Stanford University engineers have developed dynamic windows that can switch from transparent to opaque or back again in under a minute and do not degrade over time. The prototypes are plates of conductive glass outlined ...

Energy & Green Tech

How to extend your phone's battery life

As mobile phone users, all we want is enough battery life to last the day. Frustratingly, the older the device, the less power it seems to have.

Energy & Green Tech

Building better batteries

Lithium-ion batteries, widely used in devices ranging from electric cars to iPhones, are composed of a cathode made from a positively charged lithium compound and an anode composed of negatively charged carbon. Ideally, anodes ...

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