Farmers around the world all need to deal with weeds. The most widely used chemical product they use to kill those unwanted plants is glyphosate, often sold under commercial names like Roundup.
In 2015, the World Health Organization declared glyphosate a “Probable Human Carcinogen.” This link to cancer was reinforced in January 2024 when a jury in the United States concluded Roundup caused non-Hodgkin’s lymphoma and ordered chemical company Bayer — which purchased Roundup producer Monsanto in 2018 — to pay US$2.5 billion in damages. Bayer has announced it intends to appeal the verdict.
Scientists have also raised concerns about the environmental harms of long-term glyphosate application. To name just a few, glyphosate threatens honey bee populations and has been found to kill birds, fish and soil microorganisms, all of which are crucial for ecosystem health.
