At Green Disco in London, Dancers Foot the Energy Bills

Bust a move, save the world. That's the premise behind a new disco in London that bills itself as the world's first eco-club, reports the Guardian. Its dance floor is designed to harness the energy of dancing feet. The club's owner says that alone will cover 60% of the electric bills, though scientists in the obscure field of piezoelectricity are skeptical the gains will be that high, Time notes. Solar power and wind turbines meet the rest of the club's energy needs.

Other green features: organic beer, waterless urinals, discounts for those who walked there. The club's owner says the disco represents a big step toward saving the planet, but not all environmentalists are dancing to the same tune. The disco's activities "are not compatible with Friends of the Earth's work to promote low carbon living," a spokeswoman said, "so we are concerned to see the company has used our logo without our permission." (More Friends of the Earth stories.)