MEDALS GO GREEN.

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    • Abstract:
      CHEMISTRY: Elements //EARTH SCIENCE: Natural Resources The prizes for this summer's Olympic Gameshave been crafted from recycled metal AS YOU READ, THINK ABOUT how useful materialsmight be extracted from discarded electronics. Recycling facilities extracted gold, silver,copper, and zinc from the electronics (see HowMuch Metal? The elements were usedto cast Olympic medals in gold, silver, andbronze--a mixture of copper and zinc. [Extracted from the article]