For example, switching from a 10 mpg vehicle to a 15 mpg vehicle saves three times as much gas as switching from a 50 mpg vehicle to a 100 mpg vehicle.
Eventually we'll have a human on the planet that really does understand it and can live with it properly. That's the source of my optimism.
The hydrocarbon emissions produced from one-half hour of residential leaf blower operation are equal to the emissions produced from driving 2200 miles, comparable to a round trip from Denver to San Diego. Commercial leaf blowers with more horse power are