Not only are bikes a carbon-free transportation alternative, they also generate electricity and can actually charge your phone! You can test it out for yourself at our Eco-Home, just like this family did at our open house a couple of weeks ago. . . . . . #matteroftrust #energyalternatives #cleanenergy #carbonfree #bike #urbanbiking #sanfrancisco #sfbike #nonprofit #sfnonprofit #ecohome #urbanediblegarden #sustainability #openhouse #ecoexhibits #gogreen #ecolifestyle #roadbike #mountainbike #transportation #energysolutions #environmentalism #teamwork #community #ecohub