"Mirror mirror on the wall who's the fairest of them all?" Or, in modern language: Where's the closest mirror? I need to see if my hair is OK! You probably care about how you look when you approach ...

Infinite mirrors are a fun party trick, but the physics behind this phenomenon explains why it may not be true. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Daniel Povinelli was in high school when he first read about a clever experiment, published in 1970, that showed chimpanzees—but not monkeys--can recognize themselves in mirrors. "I bought into the ...