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US jury finds Monsanto guilty in Roundup trial

AFP/File / JOSH EDELSON Plaintiff Dewayne Johnson listens as his attorney speaks about his condition during the Monsanto trial in San Francisco, California

A California jury on Friday ordered chemical giant Monsanto to pay nearly $290 million for failing to warn a dying groundskeeper that its weed killer Roundup might cause cancer.

Jurors unanimously found that Monsanto -- which vowed to appeal -- acted with "malice" and that its weed killers Roundup and the professional grade version RangerPro contributed "substantially" to Dewayne Johnson's terminal illness.

Following eight weeks of trial proceedings, the San Francisco jury ordered Monsanto to pay $250 million in punitive damages along with compensatory damages and other costs, bringing the total figure to nearly $290 million.

"The jury got it wrong," the company's vice president Scott Partridge told reporters outside the courthouse.

Johnson, a California groundskeeper diagnosed in 2014 with non-Hodgkin's lymphoma -- a cancer that affects white blood cells -- says he repeatedly used a generic form of RangerPro while working at a school in Benicia, California.

The lawsuit built on 2015 findings by the International Agency for Research on Cancer, part of the UN World Health Organization, which classified Roundup's main ingredient glyphosate as a probable carcinogen, causing the state of California to follow suit.

"We are sympathetic to Mr Johnson and his family," Monsanto said in a statement promising to appeal the ruling and "continue to vigorously defend this product, which has a 40-year history of safe use and continues to be a vital, effective and safe tool for farmers and others."

- More to come? -

The lawsuit is the first to accuse the product of causing cancer but is a harbinger of a looming wave of similar legal challenges.

Observers say a Monsanto defeat likely opens the door to hundreds of other claims against the company, which was recently acquired by Germany's Bayer.

Robert F. Kennedy Jr -- an environmental lawyer, son of the late US senator and a member of Johnson's legal team -- sat in the courtroom behind the dying man, who bowed his head.

"I think the verdict is going to trigger a cascade of new cases," said Kennedy, who championed the case publicly.

"The jury sent a message to the Monsanto boardroom that they have to change the way they do business."

Roundup is Monsanto's leading product and glyphosate is reportedly the world's most commonly used weed killer.

Monsanto always denied any link to the disease and said studies concluded the product was safe.

But the controversy has already damaged the company's reputation.

Records unsealed earlier by a federal court lent credence to Johnson's claims -- internal company emails with regulators suggested Monsanto had ghostwritten research later attributed to academics.

Founded in 1901 in St Louis, Missouri, Monsanto began producing agrochemicals in the 1940s. It was acquired by Bayer for more than $62 billion in June.

Monsanto was one of the companies that produced the defoliant "Agent Orange" -- which has been linked to cancer and other diseases -- for use by US forces in Vietnam.

The company denies responsibility for how the military used the product.

Monsanto launched Roundup in 1976 and soon thereafter began genetically modifying plants, making some resistant to Roundup.

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