Q: I heard that walking behind a lawn mower for an hour is like hanging your head behind your car tailpipe for 100 miles. Could this be true? – Nick
A: According to the California Air Resources Board (CARB), 2006 lawn mower engines contribute 93 times more smog-forming emissions than 2006 cars. Why are lawn mowers so much worse than cars? Mowers use a single-stroke spark engine with no catalytic converter. That means these engines burn a lot more oil and gas and there is virtually no filter for their emissions.
