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…showed last 75 words of 344 total…problem of pollution from car exhaust is not new and is the single most polluting thing we do. The situation is so serious that many laws have been enacted to protect our environment. The pollutants that are emitted in car exhaust are very dangerous to our health. There are solutions to the problem if we just pay attention. Bibliography 1) http://bounty.echonyc.com/~transalt/blueprint/chapter18/index.html 2) http://www.unece.org/spot/97spot.17.htm