According to environmental monitoring group the Worldwatch Institute, China now boasts 16 of the world's 20 most polluted cities.
CNN: China: Economic growth, environmental destruction
Worldwatch seems to be using this to mean that this is the limit of all of the copper atoms available to us.
FORBES: Peak Copper: Worldwatch Institute Gets It Wrong Again
As fish farming expands and producers attempt to grow larger fish in crowded quarters, the risk of disease and depletion will increase, according to Brian Halweil of the Worldwatch Institute in Washington, D.
FORBES: Swimming in Prosperity
Where is Greenpeace and Worldwatch?
CENTERFORSECURITYPOLICY: A Chernobyl reminder just off our shores
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