Energy efficient or Enviornmental Hazard
Compact Fluorescent Lights (CFLs) use 66% less energy than incandescent bulbs and they last eight times longer. However CFLs contain 5mg of Mercury. Even though which is a very tiny amount compared to other common items including watch batteries (25 mg) or home thermometers (500 mg), if the old CFLs don’t disposed properly it may becomes a environmental hazard.
