Cardboard-on-wheels.

• Position: Transportation - A bicyle made out of recycled cardboard - Brief article

You may think of cardboard as a nifty container for milk or Chinese takeout. Izhar Gafni, an Israeli inventor, believes he's found a more revolutionary use for it: making a cheap, fully functioning bicycle. Gafni's bike costs only $20, weighs only 20 pounds, and is made entirely from recycled material. He hopes government grants and corporate sponsorships will eventually help him give free bikes to the poor in Africa, where many people have to walk miles between villages; and in Asia, where public transportation is very congested. Invented in the...