4 hours
Length of time a 100-watt lightbulb could remain lit with the energy saved
by recycling one beer bottle

17 trees + 7,000 gallons of water
Amount of resources that could be saved by recycling one ton of paper

750 hours
Average life span of an incandescent lightbulb 10,000 hours

10,000 hours
Average lifespan of a compact fluorescent lightbulb (CFL)

$30
Amount a single Energy Star 13-watt CFL saves in energy costs each year

$16.8 billion
Amount the U.S. would save on energy costs if every household replaced five incandescent bulbs with CFLs

$798
Average annual household bill for heating and air conditioning systems

$684
Average annual household bill for powering lights and home appliances

$266
Average annual household bill for heating hot water

Percentage of U.S. energy generated by:
Coal: 50%

Nuclear: 19%

Natural Gas: 19%

Hydro: 6%

Petroleum: 3%

Wind: 0.34%

Solar: 0.014%