Researchers at the Biodesign Institute at Arizona State University in the USA find that toxic chemicals produced in high volumes in primarily industrial settings are not destroyed during the wastewater treatment process and instead enter the environment, posing a danger to humans and animals alike.

http://www.physorg.com/news/2010-12-long-lasting-chemicals-threaten-environment-human.html http://www.sify.com/news/long-lasting-chemicals-toxic-to-humans-and-the-environment-news-international-kmwqkebbiei.html