'New tests needed' for chemicals (BBC)

[eppur_se_muova]

Thousands of chemicals should be re-assessed for possible toxicity to human and environmental health, according to a new study.

Scientists found that conventional tests underestimate how some substances accumulate along the food chain.

These include some pesticides, and possibly some pharmaceuticals.

Writing in the journal Science, the scientists say about one-third of organic substances in commercial use would need re-testing.

That could amount to about 10,000 substances. The researchers expect most would turn out to be benign.
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more: http://news.bbc.co.uk/2/hi/science/nature/6896330.stm