World's most popular weed-killer labeled 'probable carcinogen' - Chicago Tribune

According to the French agency, glyphosate is used in more than 750 different herbicide products and its use has been detected in the air during spraying, in water and in food.
http://www.chicagotribune.com/business/breaking/chi-weed-killer-roundup-carcinogen-20150322-story.html