The Environmental Protection Agencydetailed its plans on Tuesday for research into the possible health and environmental risks of nanomaterials, tiny substances that are finding growing use in products like sunscreens and industrial adhesives. The document, issued in draft form in June, calls for work to identify sources of nanomaterials, which can measure as little as perhaps one-10,000th the width of a human hair
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Nanomaterials under study by the E.P.A.
