Aries: Daily green

It's urgent that you replace all incandescent light bulbs with compact florescent lights to help save energy now. One 100-watt incandescent bulb that burns for 500 hours uses 50 kilowatt-hours, which translates as four times the energy a cfl would require to produce the same amount of light. Remember to recycle cfl bulbs once they burn out since they contain trace amounts of mercury.