Every night at 11 p.m. the village of Dörentrup in central Germany is thrown into total darkness. For the past few years, the village's cash-strapped local council has been switching off all the streetlights in the village each evening until 6 a.m. the following morning. In most places, a nightly blackout would provoke outrage as residents find themselves fumbling and stumbling their way home through the dark. But in Dörentrup, they have seen the light, with a new scheme ...

A former motor-racing engineer has unveiled a prototype of a new hydrogen-powered city car which claims to emit less than one third of the carbon emissions produced by its nearest rival. The creators of the 'Urban Car,' UK-based company Riversimple, say the vehicle emits less than 30 grams per kilometer of carbon dioxide, less than one third of the carbon produced by the Polo Bluemotion. Riversimple founder Hugo Spowers has spent nine years resesarching and developing the prototype car. "I ...