A new USGS study shows that the Gulf of Mexico’s dead zone is caused mainly from corn and soy fertilizers and animal wastes running off of the seven states abutting the Mississippi, and also Indiana and Ohio along the Ohio River, which drains into the Mississippi. Ocean dead zones are caused by extremely low oxygen levels in the water – a condition known as hypoxia. Hypoxic conditions develop where there is an excess of agricultural run-off, because of the high levels of nitrogen and phosphorous in fertilizer and manure.
The United States remains one of the few developed countries to permit the import of plastic toys made with polyvinyl chloride additives called phthalates (pronounced tha-lates), which help make toys soft and pliable enough to be twisted or sucked yet durable enough to survive a 1-year-old's grip.
Charlotte Brody is the executive director of Commonweal, an organization that works on health and environmental issues. I recently heard her speak at the Bioneers 2007 conference about chemical pollution in the environment, and how much of it mimics estrogen and is leading to biological mutation of sex characteristics in all kinds of animals.