NY Times article: Misgivings About How a Weed Killer Affects the Soil

http://www.nytimes.com/2013/09/20/business/misgivings-about-how-a-weed-killer-affects-the-soil.html?_r=0

By STEPHANIE STROM
Published: September 19, 2013

David Eggen for The New York Times

Jon Kiel, left, and Verlyn Sneller of the agriculture company Verity with a corn stalk produced without a glyphosate-based herbicide.