The Bat turbine
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Floating wind turbine takes to the sky

A pop-up power station that can be set up in a day is being developed by a US start-up.

The helium-filled device, known as The Bat, can adjust its height to take advantage of the weather conditions and can boost mobile phone signals if telecommunications equipment is added to the rig.

BBC Click's Dan Simmons reports.

More at BBC.com/Click and @BBCClick.

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