Revolving Door Uses You to Make Energy

It's an alarmingly simple concept that claims to be the world's first application: Netherlands-based company Natuurcafé La Port installed a power generator into a revolving door. Fantastic, but it took us this long? » 12/10/08 6:30pm 12/10/08 6:30pm

Fluxxlab Revolution Door is Eco-Friendly, People-Powered Power Station

The Revolution Door is a concept from New York designers Fluxxlab that puts otherwise-wasted kinetic energy from a revolving office door to good use—generating power. Fluxxlab's rationale is that humans exert a chunk of their own energy when pushing a revolving door around, and it may as well be captured via gears and… » 2/08/08 8:25am 2/08/08 8:25am