Green Left: The rapid melting of the Arctic sea-ice is one of the most alarming examples of the looming climate change catastrophe. But where most see disaster, some of the world’s richest corporations see a business opportunity. The rate of Arctic ice melt in recent years has surprised and worried experts. It is not just the fragile Arctic ecosystem that is under threat. As the ice retreats due to global warming, less sunlight is reflected back into space by the white surface. This means …