"Many pesticides used in consumer products and agriculture received federal approval through a loophole that doesn't require thorough testing, according to a study released Wednesday by an environmental group."

"The U.S. Environmental Protection Agency used a regulatory loophole to approve 65% of 16,000 pesticides that pose a potential threat to public health, according to the two-year investigation by the Natural Resources Defense Council. The authors say the EPA's database makes it unclear how many of those pesticides received adequate, if any, testing.

"People should be concerned, because we have examples of at least two pesticides on the market that shouldn't have been approved," says NRDC attorney Mae Wu, who co-authored the study with Jennifer Sass, a senior health scientist. Wu points to nanosilver, which was approved as an anti-microbial agent in clothing but may damage brain and liver cells, and clothianidin, which was designed to be absorbed into plant tissue but is passed on fatally to bees and other pollinators."

Wendy Koch reports for USA TODAY March 28, 2013. [2]