Add Yahoo as a preferred source to see more of our stories on Google. You've been diligent about cleaning your hands, your phone, your groceries, even your keys. But what about those handy reusable ...

Dr. Elizabeth Yuko is a bioethicist and adjunct professor of ethics at Fordham University. She has written for The New York Times, The Washington Post, The Atlantic, Rolling Stone, CNN & Playboy.

Add Yahoo as a preferred source to see more of our stories on Google. In fact, one study found harmful bacteria lurking in almost all tested reusable bags. Among them, half carried coliform bacteria ...