By now it is a cliche of environmental science-there are too many chemicals in use commercially and not enough resources to test for their potential toxicity. In the U.S., approximately one-quarter of the 70,000 chemicals in use have never been tested for toxicity, and every year the problem grows as new chemicals come onto the market.rn"We are not serving the public well in terms of evaluating whether new drugs or chemicals pose a significant risk to humans," says developmental toxicologist Robert Tanguay, who directs the Sinnhuber Aquatic Research Laboratory at Oregon State University. "The test requirements are so expensive that they are often not done."
展开▼
