Philip Proefrock at Inhabitat discovers vacuum elevators , a slow but energy-efficient way of building an elevator that will rise one atmosphere, or about 33 feet. He notes that they have no nasty hydraulic fluids like conventional elevators, (although many residential elevators are chain drive and don’t have hydraulics either). Nonetheless, it reminded my of a childhood favourite,
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Better Than Vacuum Elevators: The Balloon Elevator
