A viral video of a young gorilla bursting into laughter-like sounds while being gently tickled by a familiar human caretaker ...

A laugh can feel spontaneous, messy, almost impossible to pin down. But deep inside that burst of sound, researchers found a timing pattern so stable that it may have survived for 15 million years, ...

I was always told, and more than once, not to talk with a full mouth. Of course, I didn't always listen, but that seems to the rule for numerous humans for any number of reasons. However, if we're at ...

Chimpanzees, bonobos, gorillas, and orangutans all produce laughter, but scientists have long wondered how those vocalizations changed over millions of years and whether they could reveal anything ...

Until now, it had been unclear how our laughter may have changed over millions of years of evolution, and how it might relate ...

Humans and great apes have been giggling in similar ways since branching off the evolutionary tree, a new study suggests.

1. Introduction and methods -- Introduction -- Acknowledgments -- The country -- Taxonomy -- History of the discovery and study of the mountain gorilla -- Procedure and methods -- 2. Distribution and ...