Chinese researchers say shrimp shells hold promise as environmentally-friendly catalyst for biodiesel production

French-led group awarded $2.9bn tender, as critics question facility's expense and necessity

Survey shows returning investor confidence, as flurry of solar deals suggests investment and acquisition war chests are being opened

Replacing plane journeys with ultra-fast train services 'manifestly in the public interest', transport secretary says

Claims over better recycling rates than competitors were adjusted for growth in sales

Carbon market braced for summer slowdown

Industrial action looks set to end after wind turbine manufacturer secures possession order

New £500m fund aims to accelerate rollout of distributed generation and smart grid technologies

Activists occupy roof of second factory, as Vestas seeks court order to end sit-in

$1.1bn project to trial oxygen-blown IGCC technology by 2017