Daubert standard

If Tylenol trials are off the table, what else tempts? How about the weed killer Roundup - the most popular and successful herbicide ever? Luckily for the plaintiff’s bar, there’s some evidence that it causes cancer. There’s also sound evidence that it doesn’t. Eighteen cases have gone to verdict. Bayer (which owns Monsanto, the product’s developer) won ten; the plaintiffs won eight. So, is the stuff human-harmful or not? Who decides in a court of law and how? And what’s next?