In green tech news this week, Voltaic unveiled a new waterproof LED touch light that can be powered by any USB source.

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Called Paperwhite, the new model has a black and white screen and comes with a light source which enables reading in a dark environment.

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LatticePower, started by a physicist with skills and experience honed in China, is a good example of this new trend with its breakthrough technology for making a highly efficient source of light.

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