A jury ordered chemical giant Monsanto to pay $289 million Friday to a school groundskeeper who got terminal cancer after using Roundup, one of the world's most popular weed killers. The Superior Court jury [found] that Dewayne Johnson's non-Hodgkin lymphoma was at least partly due to using glyphosate, the primary ingredient in Roundup. Johnson regularly used glyphosate to spray fields while working as a groundskeeper. Monsanto acted with malice, oppression or fraud and should be punished for its conduct," Judge Suzanne Ramos Bolanos announced in court. Hundreds of lawsuits claiming Roundup causes cancer have been given the green light to proceed to trial. Cancer victims and families presenting cases say Monsanto knew about the ingredient's risk for years, but failed to warn buyers. Johnson's doctors testified he is unlikely to live past 2020. The 46-year-old Bay-area resident worked for a California county school system and applied the weed killer up to 30 times per year as part of his pest-control responsibilities. During that time, he mixed and sprayed hundreds of gallons of the chemical. "Today the jury confirmed what we have known since our investigation began - that Monsanto knew Roundup contained cancer-causing ingredients and failed to take this product off the shelf and protect consumers. The company chose corporate profit and greed above humanity," said Micah Dortch of the Potts Law Firm.