Sir David King says politicians have "heads in the sand" over oil supply risks
Chris Huhne announces doubling of North Sea oil rig safety inspections
Green groups claim environmental crisis highlights the urgent need for the Senate to pass US climate legislation
Shareholders vote against resolution calling for rethink of tar sands policy, but 15 per cent refuse to back BP's position
US Energy Information Administration downgrades projections for this year, but still expects global demand to rise by almost 1.5 million barrels a day
Annual General Meetings expected to see shareholders vote on proposals designed to challenge controversial tar sand projects
Virgin chief and fellow business leaders call for action
We're running out of oil, warns Total boss; no we're not, says Saudi chief exec
Investors to file resolution demanding more information on the risks associated with controversial oil sands projects
Solray Energy stakes claim to world's largest algae refinery, which converts toilet wastewater to biofuel