Have you ever thought about new green your cell phone is? This question isn't asked very often, but it's important. All cell phones contain plastic and metal. The main metals are usually zinc, aluminum, and lead, which are found in rocks, rivers and the ocean. But lead is dangerous, and when plastic is made, toxic gases are produced, so your cell phone causes pollution before you have even bought it. Also, most cell phones are only used for 18 months before there are replaced. The old cell phones are thrown away because many people don't realize that they can be recycled. In fact, more than four million old cell phone are recycled every year.