Green Left: Millions of tonnes of the potent greenhouse gas methane have apparently begun leaking from the seabed beneath wide areas of the Arctic Ocean, the British Independent reported on September 23. Scientists on board the research ship Yakov Smirnitsky recently finished taking precise measurements of methane along Russia’s entire northern coastline. Conducted under the International Siberian Shelf Study 2008, the research revealed methane concentrations as much as 100 times background …