Factinate on MSN

Humans are the only mammals that shed emotional tears—and evolution has no clear answer for it

We've all been there: watching a movie when suddenly your eyes well up, or hearing a song that sends tears streaming down ...
The Conversation

Why do we cry happy tears? The science behind this emotional paradox

Michelle Spear does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...