In recent years, the chemistry of the Earth's atmosphere has provided a focus for much scientific activity. Interest has been stimulated by concerns about the environmental consequences of Man's activities in general, and phenomena such as Global Warming, Acid Rain and the Antarctic Ozone Hole in particular. Of course, any attempt to understand the causes of these effects necessarily requires a detailed knowledge of the chemistry of the unpolluted atmosphere, and the result is that significant advances in our knowledge of atmospheric chemistry have been made in the last two decades.
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