Go Green! That's become such a common saying these days. Computers are going green and so can you! Make sure to unplug your power transformers when you're not using your devices. Turn off your PC at night. Laptops consume less power than desktops. However, laptops also come with batteries that contain heavy metals which are toxic to the environment. I'm proud of the fact that my Thinkpad X200 Tablet is a "green PC."