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USA: NOT SINGING
IN THE RAIN
source: darwin.bio.uci.edu/~sustain/
bio65/lec14/b65lec14.htm
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Each year the USA discharges into the atmosphere 15 million tons of sulphur dioxide…
 70% from power plants burning coal or oil;
30% from smelters and refineries;
...and 20 million tons of nitrogen oxide:
40% from cars, trucks, planes;
30% from power plants;
30% from other industrial sources.
The sulphur and nitrates released into the atmosphere eventually return to the Earth as acid rain.
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