This 2006 photo provide by the Institute of Scrap Recycling Industries shows recently baled aluminum cans in Hagerstown, Md. A can made from aluminum can be recycled and back on the shelf in 60 days. Recycling systems are facing challenges in many places, but some experts say it's still growing. And they say dual-stream recycling _ in which you separate recyclables before they're collected _ is hitting its stride. (Lloyd Wolf/ Institute of Scrap Recycling Industries via AP)
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The difference is partly based on which methods are being used for collection and processing.
