While most people understand the dangers of flushing toxic chemicals into the ecosystem through municipal sewer systems, one potentially devastating threat to wild fish populations comes from an unlikely source: estrogen.
After an exhaustive seven-year research effort, Canadian biologists found that miniscule amounts of estrogen present in municipal wastewater discharges can decimate wild fish populations living downstream. Read more..
http://www.scienceblog.com/cms/fish-devastated-sex-changing-chemicals-municipal-wastewater-15488.html
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