By Blythe Copeland, Treehugger Trading your car for a bike can make a huge difference to your carbon footprint -- and to your wallet, as gas gets increasingly expensive. But even when you know ho…388 comments
May is National Bike Month in the United States, including Bike to Work Week from May 16-20 and Bike to Work Day on Friday, May 20. In cities and towns all over the country, car lovers will ditch thei…56 comments
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