Unplug your computer every night for one month. Unless it's unplugged, your idle PC still uses electricity.

By unplugging your PC each night for a month, you will reduce your CO2 emissions by a total of 51 lbs. and your electric bill by $3.30. 146.31 tons 5849 5849 people have reduced CO2 emissions by 146.31 tons by completing this challenge so far. That's equal to turning off the electricity of 203 homes for about 1 month! That's equal to turning off the electricity of 203 homes for about 1 month! http://www.carbonrally.com/challenges/10-save-energy/referral?name=Yahoo%21+Green