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The following factoids are from the Maryland Energy Commission website.
1.By turning back your thermostat 10-15 degrees for 8 hours at night, you can save about 5-15% a year on heating costs - essentially a savings of about 1 % per degree if the setback period is 8 hours long.
2.Full-size ovens are not efficient when cooking small quantities of food. When cooking small-to medium-sized meals, it generally pays to use smaller microwave ovens, toaster ovens, or slow-cook crock pots.
3.According to the U.S. Environmental Protection Agency and the Oak Ridge National Laboratory, a vehicle loses about one percent in fuel economy for each one mile per hour driven above 55 m.p.h.
Although this formula should be adjusted for different car models and ages, we could say, for example, that a passenger car which averages 30 miles per gallon at 55 m.p.h. could get 28.5 m.p.g. at 60 m.p.h., 27 m.p.g. at 65 m.p.h., and 25.5 m.p.g. at 70 m.p.h.
  
The following factoids are from FunTrivia.com.
1.The amount of energy produced by the sun in a 2 week period equals the combined stored energy of all the coal, iron and natural gas reserves known to man. [Source: the People's Almanac #2]
2.A person uses more household energy shaving with a hand razor at a sink (because of the water power, the water pump and so on) than he would by using an electric razor.
  
The following factoids are from Our Environment vol#2, issue#3, April 1997, www.maui.net.
1.Among industrialized and developing countries, Canada consumes per capita the most energy in the world, and Italy consumes the least among industrialized countries.
2.Wind power has the potential to supply a large fraction--probably at least 20%--of U.S. electricity demand at an economical price.
3.A decrease of only 1% in industrial energy use would save the equivalent of about 55 million barrels of oil per year, worth about $1 billion.
  
The following factoids are from the Peninsula School District web page.
1.Switch to compact fluorescent bulbs in light fixtures used the most. The normal incandescent bulbs we're used to are not very energy efficient. Compact fluorescent bulbs use about 1/4 the energy and can last 10 times as long. (Isn't technology wonderful?) They often fit in the same fixtures and are available in most building and lighting supply stores
2.Turn off unnecessary lighting. If you're not in the room, you don't need the light. Get in the habit of turning off the light every time you leave a room for more than a few minutes. For fluorescent
lighting, turn them off only if you'll be away for more than 15 minutes. This prolongs the life of the fixtures.
3.Circulate heated air, since warm air rises, it tends to be trapped in the highest areas of your home. A ceiling or portable fan running at a very low speed can help distribute warm air more evenly and reduce the desire to turn the heat up.
4.Use a programmable thermostat. Like heat, you only need your air conditioner on when you're home. Set timers to come on no more than 30 minutes before you arrive home.
5.Add energy- efficient shower heads and faucet aerators. These can reduce the amount of water delivered from the tap by up to 50%, with almost no noticeable difference in pressure. That means 50% less water needs to be heated. Put them on without telling your family and see if they notice the difference.