"You run through a field and the paraglider wing catches the wind, it fills with air, blows you off the ground, you switch on the motor and off you go, you're flying, " he said.

CNN: Flying 'Parajet' takes off

Every time you turn a light switch on or a faucet off you interact with the market.

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If it all sounds too much, Mrs Kramlich points out that living with media art is really no different from living with fixed-image art. (The couple have works by Andy Warhol and Joseph Beuys in their mock-Tudor San Francisco home.) The difference, she adds with an eye to California's electricity troubles, is that you have an on-off switch and when the images vanish, the house is an artwork of its own.

ECONOMIST: Showing video art: The glasshouse effect | The

With a mechanical keyboard, on the other hand, each key press triggers an actual on-off switch a feeling as solid as flicking on the lights.

WSJ: Keys That Really Click

Local communities supported the bid, with residents in Talybont-on-Usk holding their own Star Party and organising a community light switch off.

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London, England (CNN) -- A baby born with a severe birth defect put its parents on opposing sides in a British court Monday over whether to switch off the child's life support.

CNN: Father fights mother over baby's life

The two controls on top are all you need to get the essential jobs done with this device, a button for switching it on and off (and taking stills) and the sliding record switch -- this set-up also means you can physically feel if it's recording, even when you can't see it.

ENGADGET: ION Air Pro POV camera: shoot on the piste, upload to the cloud, we go hands-on (video)

The problem with flexible displays is not so much the screen but the drive electronics that switch the individual polymer pixels on and off.

ECONOMIST: SEMICONDUCTORS: Move over, silicon | The

Last year Hewlett-Packard, along with a team of scientists from UCLA, proved the ability to make a switch that could be turned off and on, like a transistor, out of a single organic molecule called a catenane.

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