(By Anna Lappe) With genetically engineered corn and soy, Dow Chemical aims to bring back toxic herbicide use, big time – While my sister-in-law put the finishing touches on Thanksgiving dinner, I listened to her friend recount the losing battle her husband, a Vietnam veteran, fought with lung cancer. She explained her husband’s illness was caused by his wartime exposure to the toxic defoliant Agent Orange, produced primarily by two companies, Dow Chemical and Monsanto. Named for the colored band on its transport tanks, Agent Orange was a cocktail of chemicals, including an herbicide called 2,4-D. Shortly after the spraying — conducted to deprive guerrilla fighters of cover and a food supply — started in 1962, reports began to emerge of serious health effects, from birth defects to other illnesses. To this day, the U.S. Department of Veteran Affairs offers an Agent Orange registry health exam for the possible long-term problems caused by exposure, and more than 40,000 veterans have submitted disability claims. The Red Cross estimates that 1 million Vietnamese were affected, including third-generation children born with severe birth defects.