Energy Efficient Replacement Windows: Krypton or Argon-Filled, Low …
Energy efficient window replacement is an obvious home improvement project for lowering heating and cooling costs. If window film isn’t enough, look for the Energy Star.

greener and more energy efficient. - Apple, PC Hardware
Checking over at Dell’s own blog, I don’t see any mention of making laptops thinner, but instead a discussion on making its computers and production greener and more energy efficient. The blog specifically attacks Apple, claiming that …