segunda-feira, 25 de setembro de 2006

ONE MORE FAILED U.S. ENVIRONMENTAL POLICY

The issues at hand are global elimination of persistent chemicals and control of trade in toxics, and the two international treaties that address these challenges are the Stockholm Convention on Persistent Organic Pollutants and the Rotterdam Convention on the Prior Informed Consent Procedure for Certain Hazardous Chemicals and Pesticides in International Trade . As of August 2006, at least 127 countries had ratified the Stockholm Convention, and 110 had confirmed the Rotterdam Convention. Both conventions have been in force for more than two years, but the United States has yet to approve either. The chemicals addressed under the Stockholm Convention are persistent organic pollutants (POPs). These toxic substances are transported across the globe, persist in the environment, accumulate in the body fat of humans and animals, and concentrate up the food chain. Even at very low levels of exposure, POPs can cause reproductive and developmental disorders, damage to the immune and nervous systems, and a range of cancers. Exposure during key phases of fetal development can be particularly damaging, and infants around the world are born with an array of POPs already in their blood. POPs are found in the current U.S. food supply, even though many of the chemicals in question have been banned in the United States for decades.

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