Extract from an article in the London Free Press (Canada):
http://lfpress.ca/newsstand/CityandRegion/2006/04/29/1556379-sun.html

A renowned U.S. scientist who has documented fertility and sex changes -
including decreasing penis size - due to environmental contamination, says he
wouldn't apply pesticides on his own lawn.

"The use of these compounds just for cosmetic reasons, just because you
don't want to make dandelion wine from your yard or whatever, I think is
inappropriate," Guillette, who is associate dean for research at the University
of Florida, said in a lecture yesterday at UWO's Schulich School of Medicine and
Dentistry.

Based on his own scientific investigations, Guillette said there's enough
evidence pesticides put children, wildlife and the ecosystem at risk. A
zoologist, Guillette has spent the last decade studying the influence of
environmental contaminants on fetal development and reproductive systems of
wildlife and humans, including the differences between alligators living in
contaminated Florida lakes and those in cleaner ones. He found abnormalities in
sex organs, dramatic differences in egg-hatching rates and hormone levels. Penis
size of the animals from the polluted lake was smaller than animals from the
less-polluted lake.

"This is important because it is not just an alligator story. It is not
just a lake story. We know there has been a dramatic increase in penile and
genital abnormalities in baby boys," Guillette said. A follow-up study by
another scientist involving healthy couples with 5,000 healthy babies also found
reduced penis size with higher contamination levels.

Rodent studies have indicated more difficulty with fertility. The researchers
also found the alligators from contaminated water had abnormal ovaries. Some of
the abnormalities were traced to chemical compounds with estrogen, a sex
hormone. Estrogenic-type compounds are found in some pesticides, including
atrazine, mostly widely used in North America for weed control.