German chemical giant Bayer on Wednesday said it has agreed to pay over $10 billion (9 billion euros) in a mass settlement with American plaintiffs who say their cancers were caused by the Roundup weedkiller made by its Monsanto unit. "The main feature is the US Roundup resolution that will bring closure to approximately 75 percent of the current Roundup litigation involving approximately 125,000 filed and unfiled claims overall," Bayer said in a statement. mfp/rl