Monsanto Monsanto The Monsanto Company () was an American agrochemical and agricultural biotechnology corporation that existed from 1901 until 2018 when it was acquired by Bayer. It was headquartered in Creve Coeur, Missouri. Monsanto developed Roundup, a glyphosate-based herbicide in the 1970s, and became a major producer of genetically engineered crops. Monsanto was one of four groups to introduce genes into plants (1983), and was among the first to conduct field trials of genetically modified crops, (1987). It was one of the top 10 U.S. chemical companies until it divested most of its chemical businesses between 1997 and 2002, through a
Monsanto was symbolically burned. Monsanto has engaged in various public relations campaigns to improve its image and public perception of some of its products. These include developing a relationship with scientist Richard Doll with respect to Agent Orange. Other campaigns include the joint funding with other biotech companies for the website GMO Answers. In 2009 Monsanto was chosen as "Forbes" magazine's company of the year. In 2010 Swiss research firm Covalence rated Monsanto least ethical of 581 multinational corporations based on their EthicalQuote reputation tracking index which "aggregates thousands of positive and negative news items published by the media, companies, and