USA - A hearty bowl of oatmeal is a healthy way to start your day, but according to a new study, that bowl of oatmeal can contain dangerous levels of glyphosate, a weed-killing chemical linked to cancer. The study, carried out by the non-profit Environmental Working Group, found that 43 out of 45 popular breakfast cereals tested in three locations in the US contained traces of glyphosate. 31 of these contained dangerously high levels of the chemical. Glyphosate is the active ingredient in Roundup, a weedkiller manufactured by Monsanto. Roundup is the most popular weedkiller in the US, and last week a court in California ordered the company to pay $39 million in compensation and $250 million in punitive damages to a school groundskeeper who developed non-Hodgkin’s lymphoma after years of using Roundup at work.