Capturing body heat and human energy to power buildings

Ever get a warm feeling and wonder what to do? How about capturing the heat and using it for energy savings?

It's real in Sweden; there's a plan to capture body heat from scrambling commuters to heat a nearby building.

And the ideas don't stop there.

Imagine using "crowd farming" to power your building, by capturing the energy in human footsteps that depress floor tiles.

Or visualize a sustainable dance club where booty shaking runs the sound system, or a gym where exercise power lights lights the building

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