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Published online 30 March 2006 | Nature | doi:10.1038/news060327-14
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Wires find path of least resistance
Better superconducting strips hold hope for a perfect national grid.
Twenty years ago this month, two researchers discovered a class of materials that sparked dreams of electricity grids that would transmit power without any losses and trains that would levitate along friction-free tracks.
Researchers now think they have overcome one of the key obstacles that has stopped these visions becoming a reality.
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