Project could power Rwanda for decades, while reducing risk of disaster for two million people living alongside 'exploding lake'

PM's senior policy adviser on energy said DECC claims that rise would be offset by lower consumption was 'unconvincing'

Campaigners disappointed as White House says 1,700-mile pipeline will not cause significant environmental damage

Country overtakes the US to become world's largest automobile market, as global sales pass the one billion mark

Plans for hundreds of wind turbines have been blocked over claims that vibrations will interfere with recording station

Rising greenhouse emissions could tip off aliens that we are a rapidly expanding threat, warns a report

The final amount leaked could be four times the volume that has spewed into the sea in the past week

Campaigners say plants being grown in US may worsen global food crisis, while farmers express cross-contamination fears

The economic downturn means organic farmers are less likely to reap rewards of premium prices for their produce

EU emissions trading scheme is not suitable for shipping, says trade association