Bayer is set to face a second US jury over allegations that its popular glyphosate-based weed killer Roundup causes cancer, six months after the company’s share price was rocked by a $289m verdict in a California state court.

n Oakland, California jury on Monday awarded over $2 billion in damages to a couple who were diagnosed with non-Hodgkin’s lymphoma after spraying Roundup, America’s most popular weedkiller, on their properties for decades. As The San Francisco Chronicle reports, this is the third such ruling against Monsanto, manufacturer of the glyphosate-based herbicide, and the company now owned by German pharmaceutical giant Bayer AG.

Farmers have been using the weed killer glyphosate—a key ingredient of the product Roundup—at soaring levels, even as the chemical has become increasingly less effective and as health concerns and lawsuits mount.

When University of British Columbia professor of biochemistry and molecular biology Deanna Gibson and then-PhD candidate Jacqueline Barnett began researching glyphosate, they hoped their hypotheses would not be true.