Newly elected green state government vows to bring speed limits to the Baden-Württemberg home of Mercedes-Benz and Porsche

Funding round rewards four next-generation projects, including MIT's "double bubble" aircraft design

BrightSource Energy completes financing for flagship project with injection from search giant

Big banks accused of backing high risk and environmentally damaging mining practices

Country imports ethanol for the second time in its history, undermining environmental benefits of biofuel reliance

Transparent solar film promises to top up mobile device batteries without the need for wires

Electric car firm sues BBC for libel and malicious falsehood over critical review

Research aims to turn human waste into usable energy

Department of the Interior reveals plan to sell leases for 758 million tonnes of coal

Aviation giant launches Sustainable Biomass Consortium with a view to streamlining biofuel standards