Arctic clouds highly sensitive to air pollution — ScienceDaily

In 1870, explorer Adolf Erik Nordenskiƶld, trekking across the barren and remote ice cap of Greenland, saw something most people wouldn’t expect in such an empty, inhospitable landscape: haze. Nordenskiƶld’s record of the haze was among the first evidence that air pollution around the northern hemisphere can travel toward the pole and degrade air quality […]