News
California throttles down small-engine pollution
A landscaping worker trims a bush with a gas-powered machine while a technician monitors the air quality for FairWarning. (Photo: Stuart Silverstein)New California rules aimed at curbing the surprising amount of pollution coming from leaf blowers, lawn mowers and other small gas-powered machines cleared a final hurdle Monday, and are set to take effect on Jan. 1. The requirements mark another step in the state’s long-running battle to reduce emissions from a category of small engines that have come to rival cars as a source of smog-forming pollution.