Three Men and a Bike

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Bicycles burn calories, not carbon, so they're considered among the cleanest forms of transportation. But most bikes are made of aluminum and steel which leave a large carbon footprint since the materials are mined and processed. Now a group of young men have come up with a clean, renewable replacement: bikes made of bamboo. Living on Earth's Jessica Ilyse Smith went to the Bamboo Bike Studio in Brooklyn, New York and has our story.