France's highest court has ruled that US agrochemical giant Monsanto had not told the truth about the safety of its best-selling weed-killer, Roundup. The court confirmed an earlier judgment that Monsanto had falsely advertised its herbicide as "biodegradable" and claimed it "left the soil clean." Roundup is the world's best-selling herbicide.

In the latest ruling, France's Supreme Court upheld two earlier convictions against Monsanto by the Lyon criminal court in 2007, and the Lyon court of appeal in 2008, the AFP news agency reports.

Monsanto already dominates America’s food chain with its genetically modified seeds. Now it has targeted milk production. Just as frightening as the corporation’s tactics–ruthless legal battles against small farmers–is its decades-long history of toxic contamination.