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GRIST TV's Channel, September 2008, "Umbra on Commuting by Bike", YouTube

GRIST TV's Channel, September 2008, "Umbra on Commuting by Bike", YouTube
Video ( 2:10 mins) - Visit Site

UMBRA is Grist TV's answer to the Agony Aunt.  Grist.org serves up environmental news, commentary, and green living advice, all designed to inform, inspire, and link America's next generation of green citizens.