Background: The Roundup/Glyphosate Controversy
Roundup is the world’s most widely used herbicide, with its active ingredient glyphosate applied to farms, gardens, and public spaces in over 160 countries. Monsanto developed Roundup in 1974 and paired it with “Roundup Ready” genetically modified crops starting in the 1990s.
The litigation centers on claims that glyphosate causes non-Hodgkin lymphoma (NHL), a group of blood cancers. In 2015, the International Agency for Research on Cancer (IARC), a division of the World Health Organization, classified glyphosate as “probably carcinogenic to humans” (Group 2A). Monsanto (and later Bayer) has consistently disputed this classification, citing regulatory approvals from the EPA, EFSA, and other agencies.
Bayer acquired Monsanto for $63 billion in 2018 — just months before the first Roundup trial resulted in a $289 million verdict against the company. The acquisition is widely regarded as one of the worst corporate deals in modern history due to the unanticipated litigation costs.