11 Ways to Save Your Planet
How Many People Does It Take To...
Compact fluorescent bulbs (CFLs) use four times less energy than incandescent ones. If every American family substituted five CFL bulbs for incandescent, it would be equivalent to taking eight million cars off the road for a year. Ball says "They cost a little more up front, but they last up to 15 times longer."
From the February 2008 issue of O, The Oprah Magazine