Beaufort Sea, Alaska, 3pm local time - Five Greenpeace activists were today arrested by Alaska State Troopers while occupying a barge working for BP in the Arctic Ocean. The 130-metre barge carrying a control centre and accommodation module was en-route to BP's controversial Northstar oil installation. The five Greenpeace activists, three from the UK and two from the US, had occupied the barge for 39 hours.