Gas lighting explains why a large number of older gas lamps have been converted to electricity. Solar-rechargeable battery-powered gas light controllers can be easily retrofitted into existing gas lamps to keep the lights off during daylight hours and cut energy consumption and green-house gas carbon emissions by 50%. The use of natural gas (methane) for "indoor" lighting is nearly extinct. Besides producing a lot of heat, the combustion of methane tends to release significant amounts of carbon monoxide, a colorless and odorless gas which is more readily absorbed by the blood than oxygen, and can be deadly. Historically, the use of lamps
Lawn mower of at least 35 percent. Lawn mowers produce GHG emissions. A minimum-maintained lawn management practice with clipping recycling, and minimum irrigation and mowing, is recommended to mitigate global warming effects from urban turfgrass system Mowers can create significant noise pollution, and could cause hearing loss if used without hearing protection for prolonged periods of time. Lawn mowers also present an occupational hearing hazard to the nearly 1 million people who work in lawn service and ground-keeping. A recent study assessed the occupational noise exposure among groundskeepers at several North Carolina public universities and found noise levels from push lawn mowers