Not too long ago I read about energy being harvested from people walking across the floor of an airport which then opens and closes the airport's automatic doors. Now Eco-Geek reports on a similar plan for a playground's old-fashioned see-saw!
Tuesday, April 8, 2008
Is there any moving thing that CAN'T produce electricity?
Not too long ago I read about energy being harvested from people walking across the floor of an airport which then opens and closes the airport's automatic doors. Now Eco-Geek reports on a similar plan for a playground's old-fashioned see-saw!
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