Photographs authentically show twins, one of whom smoked and tanned for 16 years while the other did not. Rating: Miscaptioned (About this rating?) Context: Although the photographs did show twins ...

A mother of identical twins has had enough of hearing the same comment—so she decided to clear things up once and for all. After repeatedly being told her sons couldn’t be identical because they don’t ...

“Twins are probably the best natural experiment we have for understanding who we are and how we got that way,” says the expert who helped them learn their genetic connection Wendy Grossman Kantor is ...