This will choke you up. It would be hard to argue that an open flame grill produces any less smoke than a gas lawn mower – with just one lift of the lid a pretty big cloud is released. Let’s say it’s just the same. According to the U.S. Environmental Protection Agency a lawn mower produces 5% of the nation’s air pollution, equivalent to 43 new cars being driven 12,000 miles per year. Nobody thinks about (or wants to) the negative impact of a billowing piece of backyard grilling equipment – maybe because it has a quiet “engine" (that burns gas and food). Are you serious about reducing smog and combating global warning? Purchase something that does more with less!