“. The Truth: In this case the negative effects completely outweigh the positive. Sure, GM crops may be “no-till,” but we have effectively increased the amount of toxic chemicals released into the environment while simultaneously creating a new breed of “superweed” that is resistant to “safe” herbicide. Myth 7: Monsanto's glyphosate, known as Roundup, is a nonthreatening, biodegradable herbicide. The Truth: Roundup was forced to remove the term biodegradable from its packaging.  Roundup persists in the environment and has toxic effects on wildlife. During crop growing season, the toxin known as Roundup was found in 60-100% of air and rain samples taken from the Midwest. Yuck. Myth 8: GM and Non-GM crops have”