A lawn mower can easily spew as much smog-causing hydrocarbon into the air in an hour as a modern car, even though the car has 30 times as much horsepower, according to the New York Times. That's bad news for Philadelphia, which has some of the nation's worst air quality.
Perhaps the Park Rangers at Independence Mall and whoever (if anyone?) is overseeing the management of the city's vast portfolio of vacant lots should copy Seattle's City Government and unleash a herd of goats and sheep as an environmentally friendly alternative to mowing. No word on weather it also saves money but it would be nice to see some signs of life along independence mall's pastures.
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