New research has several findings about stuttering including a structural deficiency in the brain's wiring, an inability to perceive rhythms, and a successful way to treat stuttering.
Surveys show that most Americans are less than happy, and seldom experience joy. Two experts discuss how even naturally glum people can manufacture joy.
A familiar tool in the fight against melanoma, proof we can tell if people are sick by looking at them, an unexpected benefit of going to church, and research on why women avoid certain majors.