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Bicycles to Save Earth

Posted April. 22, 2008 04:05,   


In an effort to spread the use of environment-friendly bicycles, participants lift their bicycles during a demonstration dubbed “Critical Mass,” in an annual Earth Day (April 22) celebration in Budapest, Hungary, on Monday. Critical Mass is a physics term meaning the minimum amount of a fissile material required to sustain a chain reaction. Tens of thousands of people participated in the event. One of the participants lifted his child, instead of a bicycle.