Jaymi Heimbuch, 8 March 2010, USA: TreeHugger - Science & Technology
The time change isn't here quite yet, which means many of us are still riding our bikes home in the dark after work. A bright bike light is therefore a must, and there are a lot of systems available that gather a charge while cycling. The newest one is a system that hooks up to your bike wheel but is entirely frictionless, relying instead on magnetism.
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