In an expensive clean-up of Monsanto litigation messes, Bayer AG said Wednesday that it will pay out more than $10 billion to settle tens of thousands of U.S. claims brought against Monsanto over its Roundup herbicide, as well as $400 million to resolve lawsuits over Monsanto’s dicamba herbicide and $650 million for PCB pollution claims. … Bayer settles U.S. Roundup, dicamba and PCB litigation for more than $10 billion