Janez Potočnik, European Union commissoner for green affairs, says unless habits change scarcity could see prices spike
Fleet operators unprepared for stricter targets in London's Low Emission Zone
James Murray looks back on a year of climate deals, policy U-turns, and steady progress for the green economy
BusinessGreen runs down the best quotes from the world of green business this year
From Brazilian wind power to solar subsidy scandals, we run down the top stories of 2011
Prediction using unique calculator challenges view that sustainable energy means higher costs
Environment Agency hydro boss predicts feed-in tariffs will remain the same despite next year's consultation
Jessica Shankleman examines the pros and cons of the latest electric bike
Who said what in the world of green business this week?
Businesses urged to submit evidence to Environment, Food and Rural Affairs Committee ahead of draft water bill