How many NC State engineering students does it take to replace an inefficient light bulb with an energy-efficient one?
Five: Three to design a nuclear-powered light bulb that never needs changing, one to install it, and one to write the computer program that controls the wall switch.
Energy Efficiency Tip
When using your laptop computer at home, put the battery charger (an AC adapter) on a power strip that can be turned off. The transformer in the charger draws power continuously, even when the laptop is not plugged in.