“An innovative new initiative underway at a correctional facility in Mexico City, prisoners are being given the chance to slash their sentences while bringing a bit of light into the world, literally…by producing the electricity used to power city street lamps with some muscle power! According to the National Journal, Mexico’s Santa Rita prison, following the suggestion of a local judge, recently installed electricity-generating stationary bikes as part of a plan to keep inmates active while letting them contribute to a greater good.”

http://glossynews.com/science-and-technology/computers-and-technology/201210130222/prisoners-in-mexico-can-reduce-their-prison-sentence-by-producing-electricity/#more-30286