When US government regulators hired the firm Sciences International to help review a potentially dangerous chemical, they almost certainly didn't intend to ignite a political firestorm. But the company's links to the chemical industry have enraged environmentalists and forced the National Institute of Environmental Health Sciences (NIEHS) to pull the contract. Last week, in the face of growing pressure from both Congress and the public, the agency announced that it would re-review the 20 chemicals that the company had been involved in studying.
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