What exactly is global dimming? Global dimming is a recently discovered phenomenon that reduces the amount of solar radiation reaching the surface of our planet. Until recently, scientists had dismissed the published evidence, since it directly opposed the evidence and observations for global...

You don't need expensive equipment to do research into air pollution. Lichens are good indicators of air quality..... Lichens consist of two organisms living together in harmony, supporting each other's needs in order to survive. This is commonly called a symbiotic association. The fungus part of...