Biofuel

Short-term lowering of limits by 10km/h imposed as part of a package of measures to cut oil demand

Fears of petrol shortages as consumers reject biofuels in favour of standard petrol

Energy giant predicts organic fuels will make up more than 12 per cent of all road fuel by 2030

Biofuel firm outlines plans for expansion drive after raising cash through share placement

Unrest in North Africa prompts government to reduce speed limits, increase biofuel blends and cut rail fares in attempt to save oil

Airlines fear insufficient allocation of emissions trading scheme credits if 2010 is used as a base year

Companies confirm new Raizen ethanol joint venture will be operational by the summer

Solazyme signs agreement with Aussie airline to test commercial production potential of microbial-derived aviation fuel

Research body launches £40m project to improve the efficiency of some of the world's largest vehicles