'Gender-bending' pollution is being blamed for an alarming trend occurring in English rivers - a third of male fish are changing sex. Female hormones from the contraceptive pill and HRT are being washed into the rivers, causing male fish to produce eggs. This problem is raising fears that the pollutants could also contaminate drinking water and even affect men's fertility. Research by the Environment Agency shows that a third of the male fish were between sexes, but in one waterway near a heavy discharge of treated sewage, over 80 percent had female characteristics. These tests revealed the males developed female sex organs and were producing eggs.
and the 'magnetic bed'. (thanks to ting and reep for sending this link)
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