A new $7.25 billion settlement between Bayer and a group of cancer patients could wrap up a huge wave of lawsuits against the company over allegations that it didn’t warn consumers about cancer risks associated with the weedkiller Roundup.

Bayer faces more than 180,000 claims over Roundup, which contains the herbicide glyphosate – the chemical at the center of the controversy. Most of those claims are from people who used the weedkiller, which is sold at any hardware or garden store, at home. The lawsuits have prompted Bayer to pull glyphosate out of many products under the Roundup brand, though glyphosate is still commonly used by farmers and in the agriculture business broadly.

The science around glyphosate is controversial. The Environmental Protection Agency has said that glyphosate is........

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