Many things that are used to save energy. But are they really "Green"? For example the curly lightbulbs that are energy star. They are not entirely good. Those lightbulbs contain mercury that is a highly toxicable element. It is in the lightbulb and if the lightbulb is cracked or broken the mercury will leak out of it. You are not supposed to just through them in the city dump. But how many people actually know that. You can recycle them at your local Home Depot.