Human impact on the oxygen cycle?

Where can I find information about Styrofoam and Paper cups environmental impact in it's Life Cycle?

• I am doing a Life Cycle analysis of the two types of disposable cups to compare and derive which one is more harmful to the environment in its whole life cycle. Starting from the Resource Extraction, followed by Manufacturing (Raw Material & Product), Usage and Recycling/Disposal. Any detailed sources providing these information are welcome. Thanks!!

• Answer:

  If you are an American then be aware that disposable cups are not made of styrofoam, they are made of expanded polystyrene. Styrofoam is a brand name that Americans misuse, like people say they will Hoover when they mean they will vacuum clean. Styrofoam is EXTRUDED polystyrene foam, a different product used to insulate walls. Disposable coffee cups are not made out of Styrofoam, they are made out of EXPANDED polystyrene. When you are clear which product you actually mean, then the following link might be helpful to you: http://news.yahoo.com/blogs/this-could-be-big-abc-news/more-mere-magic-mushrooms-154207424.html