Now nearly twice as many girls as boys are being born in the Aamjiwnaang community, who live next door to the Sarnia-Lambton Chemical Valley complex in Ontario, Canada.
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The proportion of male births began falling around 1993, says Constanze Mackenzie of the University of Ottawa. And the ratio has become more skewed since then. Between 1999 and 2003, the community saw just 46 boys born compared to 86 girls.
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Ken Dyck 