Tear-free crying faces, on the other hand, were confusing. “Without the tears, the emotion almost disappears,” Cornelius says. “Their judgments of the emotion don't tend to cluster around the ‘sad’ ...

"I seriously want to cry for this dog," wrote Britta. While Tasia said: "The pain in that baby's eyes is physically hurting me." "Yeahhh she would be mine if I lived anywhere near this shelter ...

We encounter minor key music in real life, we see people who cry and we watch bad things happen to other people—all these things make us feel sad. But in a movie, you can crank those things up ...

Snapchat's "crying filter," which users commonly refer to as the "sad face" filter, has become the latest viral trend, gaining over 1.3 billion impressions since last week.