Recordings of laughter from humans and other great apes suggest that the distinctive rhythm of "ha ha ha" emerged in a common ancestor that lived at least 15 million years ago.
Welcome back to the Abstract! Here are the studies this week that yucked it up, went interstellar, controlled the weather, and sang our praises.
First, the sounds of ape laughter have been gracing o… [+7061 chars]
First, the sounds of ape laughter have been gracing o… [+7061 chars]