I don’t understand how this is possible. The car engine is more efficient but the leaf blower would use a gallon or less of fuel that that amount of time as where the car would burn 30 to 40 times more that for the trip.
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There’s many different types of pollution. One is CO2, for example. Other types are particulates, NOx compounds and so on.
Car engine systems and exhaust systems tend to release relatively small quantities of these other types of pollution, but a lot of CO2 and CO.
Leaf blowers tend to be fairly inefficient and have incomplete combustion, virtually no filters and no catalytic converter – so they release much less CO2 than cars, but much much more of the other pollutants.
When people say leaf blowers cause more pollution this is what they’re talking about. Note that many of these other compounds are more acutely hazardous to people and the local environment, while CO2 is obviously a fairly well noted hazard for the global environment.
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