Your best friend texts you a picture of her newborn baby. With chubby cheeks and tiny toes, you can’t wait for baby kisses, and you head straight to your friend’s house to meet the new little one (and ...

Barack Obama did it. Donald Trump did it. Joe Biden, of course, has done it too. But each of them was wrong: Kissing another person’s baby is just not a good idea. That rule of lip, experts told me, ...