Switch to CFL’s if you haven’t already. Electricity generation is the number one cause of global warming today. But how can you make a difference? It’s as easy as screwing in a new light bulb today. If you’re not already using compact fluorescent lights, it would be a wise investment in your budget and for the environment. If every household in the U.S. replaced just ONE incandescent light bulb with an energy efficient compact fluorescent light bulb (CFL), it would eliminate the equivalent of the emissions created by one million cars. And that’s only one bulb per household! Most homes have 15-30 bulbs. And CFL’s last 5-7 years, much longer than incandescent.