When you laugh, the whole world laughs with you -- as long as your sentiment is genuine, your vocal chords are engaged, and your mouth is open. A new study found that people experienced the most ...

The sound of laughter may make you smile and laugh, British researchers report. "It seems that it's absolutely true that 'laugh and the whole world laughs with you,'" Sophie Scott, Ph.D., says in a ...

Human behaviour When you laugh, the whole world laughs with you - as long as your sentiment is genuine, your vocal cords are engaged, and your mouth is open. A new study has that people experienced ...