Air pollution makes more girls

Researcher Jorge Hallak of the University of San Paolo has published a study which suggests that more girls are born in areas with high air pollution than are born in areas with low air pollution. While it is by no means definitive, Hallak and his team theorize that environmental stressors might trigger a biological response that favors the birth of females, who are more likely than males to reproduce themselves and thus perpetuate their genetic code. This is supported by Hallak's findings that the mates of male mice exposed to pollutants gave birth to more females than expected.

So let me get this straight. When a place gets too dirty, the body produces more women and fewer men? Makes perfect sense to me...

For more information on the air quality where you live (in the US): http://www.airnow.gov/