Calories come off and lights come on
Monday, August 25, 2008 - 11:21
in Physics & Chemistry
A gym in Portland, Ore., will use exercise equipment to generate renewable energy. As Adam Boesel pedals an exercise bike, he sends power to a generator that converts his workout calories into electricity. Across the room in his small eco-friendly gym are half a dozen energy-efficient treadmills. On the roof, solar arrays gather more natural energy.