The Environmental Protection Agency must ban the toxic weedkiller paraquat a step more than 60 other countries have taken because of its threats to human health. Paraquat has been linked to Parkinson's disease, non-Hodgkin lymphoma, childhood leukemia and more. While the EPA says paraquat is too toxic for use on U.S. golf courses, it still allows use of the herbicide on farms. This threatens the health of the people who apply it, other farmworkers and those who live or work near crop fields where it's used. More than 10 million pounds of paraquat were sprayed in 2018 alone, twice as much as has been sprayed since 2014. While much of the paraquat applied winds up in the soil for years, the chemical can also drift through the air or linger in dust. Syngenta makes paraquat in China and the United Kingdom. The Swiss-based company, which was acquired by a Chinese state-owned chemical conglomerate, has long understood the chemical's health risks. But it spent decades hiding this knowledge from the public and the EPA. Ironically, Chinese, U.K. and Swiss farmers are prohibited by their respective governments from using paraquat due to potential health risks from exposure. But the weedkiller isn't prohibited in the U.S. Ingesting even tiny amounts of paraquat can be lethal. Recently, findings from researchers at UCLA show paraquat sprayed within 500 meters ... of where people lived and worked could more than double a person's odds of developing Parkinson's.