Every spring, as the Arctic sun breaks months of darkness, life stirs in Greenland. Polar bears emerge, arctic terns return, and musk oxen migrate. And, amidst this awakening, algae on the ice begin to bloom, darkening the surface and accelerating ice melt. This phenomenon exacerbates global warming by reducing the ice’s ability to reflect sunlight. But a team of researchers may have found a natural solution. Giant viruses discovered on the ice — at least 1,500 times larger than your typical cold-causing variety — could control these algae blooms, offering a potential way to mitigate ice melti…