Two U.S. workers are suing Monsanto over charges that the company\u0026#039;s Roundup herbicide caused their cancers while accusing the agrochemical giant of deliberately misleading the public and regulators about the dangers of being exposed to its product.The suits, both filed separately last week, come six months after the World Health Organization declared glyphosate, the key weed-killing ingredient in the herbicide, a \u0022probable carcinogen.\u0022 Earlier this month the California Environmental Protection Agency also announced it would begin labeling the chemical with the same designation.One suit, filed Sept. 22 in a New York federal court, claims that plaintiff Judi Fitzgerald\u0026#039;s exposure to Roundup while working at a horticultural products company in the 1990s was a contributing cause of her 2012 leukemia diagnosis.Filed on the same day in a Los Angeles District Court, the second suit (pdf) charges that former farm worker Enrique Rubio\u0026#039;s weekly exposure to Roundup products—which he sprayed on fruit and vegetable fields in Oregon and California— was \u0022a substantial and contributing facto[r] in causing [his] grave injuries,\u0022 referring to his 1995 bone cancer diagnosis.\u0022For nearly 40 years, farms across the world have used Roundup without knowing of the dangers its use poses,\u0022 Rubio\u0026#039;s suit states. \u0022That is because when Monsanto first introduced Roundup, it touted glyphosate as a tehnological breakthrough: it could kill almost every weed without causing harm either to people or to the environment.\u0022\u0022Of course, history has shown that not to be truth,\u0022 the statement continues, citing the WHO\u0026#039;s recent designation.\u0022Those most at risk are farm workers and other individuals with workplace exposure to Roundup, such as workers in garden centers, nurseries, and landscapers. Agricultural workers are, once again, victims of corporate greed,\u0022 the suit states. \u0022Monsanto assured the public that Roundup was harmless,\u0022 the suit continues, adding that the company \u0022championed falsified data and attacked legitimate studies that revealed its dangers.\u0022\u0022Monsanto led a prolonged campaign of misinformation to convince government agencies, farmers and the general population that roundup was safe,\u0022 it adds.The lawsuits further claim that the federal Environmental Protection Agency (EPA) changed an initial classification for glyphosate from \u0022possibly carcinogenic to humans\u0022 to \u0022evidence of non-carcinogenicity in humans\u0022 after pressure from Monsanto.In a related development, the EPA announced Monday a series of landmark rules to protect agricultural workers from hazardous chemical exposure. One of Rubio\u0026#039;s attorneys, Robin Greenwald, said she anticipates more suits targeting Monsanto and other biotech companies to follow, as awareness over glyphosate\u0026#039;s cancer-causing properties become more widely known. \u0022I believe there will be hundreds of lawsuits brought over time,\u0022 Greenwald said.The U.S. lawsuits follows a French court ruling earlier this month that found Monsanto \u0022responsible\u0022 for the health problems suffered by a local farmer, who argued that the company\u0026#039;s Lasso herbicide did not have proper warning labels. That decision upheld a lower court conviction.