Thor, the Norse god of thunder, is famous for conjuring electricity from thin air. It turns out you don't necessarily need a magical hammer to do this, as scientists have created a device that harvests electricity from radiation in its environment.

Thor, the Norse god of thunder, is famous for conjuring electricity from thin air. It turns out you don't necessarily need a magical hammer to do this, as scientists have created a device that harvests electricity from radiation in its environment.