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Summary:Looks at the problems of catalytic converters in that they allow more fuel consumption and therefore increase concentrations of carbon dioxide - one of the "greenhouse gases". Geoffrey West has developed an alternative,the Lean Burn Engine,but there are problems getting it accepted.
Description:WHY CATALYTIC CONVERTERS ARE BAD FOR THE ENVIRONMENT AND THE PROGRESS BEING MADE IN DEVELOPING LEAN BURN ENGINES,WHICH POLLUTE LESS