The amount of sunshine that reaches the surface of the earth has dropped significantly in the last fifty years because of air pollution, with some areas experiencing a reduction of up to 37 percent. The phenomenon, known as global dimming, was first noticed twenty years ago but was dismissed as being impossible.
The amount of sunshine that reaches the surface of the earth has dropped significantly in the last fifty years because of air pollution, with some areas experiencing a reduction of up to 37 percent. The phenomenon, known as global dimming, was first noticed twenty years ago but was dismissed as being impossible.