Opinion: Supreme Court ruling on Roundup points to a confusing difference between the law and science

When the Supreme Court handed Monsanto a major win in Roundup litigation on Thursday, the headlines sounded like a scientific event: a case about whether Roundup causes cancer.

But Monsanto v. Durnell did not settle that question. The court held that federal pesticide law preempts a state failure-to-warn claim when the Environmental Protection Agency has not required a cancer warning on the product label.

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