Renewable Energy: Biofuels heat up

By the end of 2015, all British Airways flights out of London City Airport will be fuelled by rubbish — the paper, food scraps, garden clippings and other organic detritus discarded by the city's residents.

But before it goes into planes, the rubbish will be processed at GreenSky London: a biofuels plant under construction on the eastern side of the city. Each year, the facility will take in some 500,000 tonnes of the city's waste and will transform the organic component into 60,000 tonnes of jet fuel, a similar quantity of diesel fuel combined with petrol-like naphtha, and 40 megawatts of power....