A Roundup lawsuit is a legal case where people or groups claim that they got sick because they were exposed to Roundup, a common weed killer. Roundup has a chemical called glyphosate that some say can cause health problems like cancer. People in these lawsuits say that the company that makes Roundup, Monsanto (now Bayer), didn’t warn them enough about these risks. So, they’re suing Monsanto, saying it’s their fault. The lawsuits can be about the company not being careful, making a dangerous product, or not telling people the truth about how risky it might be. The results of these cases can make a big difference in how people think about using weed killers and how companies have to tell us about any dangers in their products.