Meanwhile, Sweden is soaking up body heat from public places to help heat buildings, China unveiled plans for a futuristic eco city, and several offices in Minnesota flipped on a set of souped-up ceiling lights capable of broadcasting wireless internet.

ENGADGET: Inhabitat's Week in Green: sexy green cars, glass strong as steel, and Tianjin's Eco-City revealed

The laparoscopic equipment features voice-activated lights, ceiling-mounted monitors and special green lights to reduce the strain on staff's eyes.

BBC: Hospital installs new keyhole equipment

Just flip a switch on the ceiling and one candle lights.

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Inside, the tunnel was cool and dark, about thirty feet high, with a smooth ceiling, faintly lit by work lights along the edges.

NEWYORKER: Boss Rail

For a few minutes, red and blue lights make flashing patterns on my ceiling, then all is quiet and dark on Westerbury Road.

NEWYORKER: Magda Mandela

C. decorator Barbara Hawthorn transformed mauve-colored tiles around the indoor pool with glazed drywall stenciled to resemble sandstone and put twinkle lights and fish netting on the ceiling.

FORBES: Home Improvement