In celebration of Earth Day Saturday, we€„¢d like to point out one of the most offending products on the plant €€œ the obnoxiously loud, pollution-spewing gas-powered mower. The U.S. government says push mowers emit as much hourly pollution as 11 cars, and a riding mower emits as much as 34 cars. Gag! One alternative is the Neuton, a cordless electric model that we switched to last year (now available for $20 off at $379). Its positives extend beyond its Earth-friendliness: it€„¢s lightweight and easy to manage, less noisy than a gas engine (its motor €œwhirs€) and when you turn it off after mowing your hands don€„¢t vibrate for 20 minutes. Elsewhere, our Canadian Shopperati can participate in The Home Depot Canada€„¢s 6th annual Mow Down Pollution lawn mower recycling and rebate program. HD helps Canadians to “go green” by helping them recycle older, higher polluting lawn mowers and trimmers. And for more background on how we Americans fuel this massive, self-inflicted problem, check out American Green: The Obsessive Quest for the Perfect Lawn (Norton, $15.72 at Amazon). Author Ted Steinberg, an environmental historian at Case Western Reserve University in Cleveland, skewers our lawn-care obsession that drives a $40 billion industry… and a lot of environmental damage.