I'm surprised that the article doesn't mention environmental causes. It's been known for a while that almost all water involved in human activities is polluted

I'm surprised that the article doesn't mention environmental causes. It's been known for a while that almost all water involved in human activities is polluted and contain residues of pharmaceutical drugs, pesticides and other things. It's been shown that they mess with fish sexual functions, and they are strongly suspected as a cause for the decline of human male fertility. http://www.wisconsinwatch.org/2013/05/22/study-chemical-blend-lowers-fish-testosterone/ http://www.wisconsinwatch.org/2013/05/22/study-chemical-blen... http://www.sciencedaily.com/releases/2009/01/090118200636.htm http://www.sciencedaily.com/releases/2009/01/090118200636.ht...