We've all heard of Global Warming, but what about Global Dimming? The idea is that the Earth is getting darker .. it is receiving less sunlight than it had been getting 40 years ago. It was estimated in the mid 1990's that the US was receiving 10 percent less sunlight than in 1960. Why? The article suggests atmospheric pollution and talks about other impacts the pollution is having in the world.
Icarus Flying II – wot no sun?