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Studies number in the hundreds. Millions of dollars have been spent. But government health officials still cannot decide whether the chemical bisphenol-‐A, or BPA, a component of some plastics, is safe.
Citation and Acknowledgement:
Despite many studies and a great deal of money having been spent on resolving the issue, it still remains unclear whether or not BPA is safe (Grady 2010).
Reference:
Grady G. 2010 Sep 7. In feast of data on BPA plastic, no final answer [Internet]. New York Times (New York ed.).; Sec. D:1. [modified 2010 Sep 9; cited 2010 Sep 9] Available from http://www.nytimes.com/2010/09/07/science/07bpa.html