Dewayne Johnson tries not to think about dying. Doctors have said the 46-year-old cancer patient could have months to live. The father of three and former school groundskeeper has been learning to live with the gift and burden of being in the spotlight in the month since a California jury ruled that Monsanto caused his terminal cancer. The historic verdict against the agrochemical corporation, which included an award of $289m, has ignited widespread health concerns about the world's most popular weedkiller. Johnson ... was the first person to take Monsanto to trial on allegations that the global seed and chemical company spent decades hiding the cancer risks of its herbicide. He is also the first to win. The groundbreaking verdict further stated that Monsanto acted with malice" and knew or should have known that its chemicals were "dangerous". The chemical that changed Johnson's life is glyphosate, which Monsanto began marketing as Roundup in 1974. The corporation presented the herbicide as a technological breakthrough that could kill nearly every weed without posing dangers to humans or the environment. Roundup products are now registered in 130 countries. Glyphosate can be found in food, water sources and agricultural workers' urine. Research ... has repeatedly raised concerns about potential harms linked to the herbicide. In 2015, the World Health Organization's international agency for research on cancer classified glyphosate as "probably carcinogenic to humans".