A village in Germany is pioneering a method of saving energy and reducing carbon emissions by switching off the street lights at night.
But local residents can use their mobile phones to turn the street lights back on again for 15-minute periods whenever they want.
Steve Rosenberg visited Doerentrup in north-west Germany to see how it works
But local residents can use their mobile phones to turn the street lights back on again for 15-minute periods whenever they want.
Steve Rosenberg visited Doerentrup in north-west Germany to see how it works
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