Scientists have zeroed in on a widely-used weed killer that could be tied to a historic rise in young colon cancer cases.

Forbes contributors publish independent expert analyses and insights. Physician who writes about the rising rates of cancer in young adults. Colon cancer is a leading cause of cancer-related deaths.

It’s not hard to feel filthy, even when you are, by most objective measures, perfectly clean: showered and laundered and trimmed, plucked, groomed, and buffed. Who knows what lurks beneath, in your ...