Matt Richtel

At a barbershop in Colorado, stylists and customers discussed a matter of social protocol.

Can my son learn from the example of the robot controlling the steering wheel? Or should it be the other way around?

William Cope Moyers told the world he had it all figured out after beating his addiction to crack cocaine. But then a dentist gave him an opioid pain killer.

A new report calls for public education and closing of legal loopholes to keep the public safe.

Odds are your adolescent has already encountered online pornography. Your role is to openly address it, scholars say.

More adolescents than ever are watching it. What’s needed, researchers say, are frank conversations and “porn literacy.”

Más adolescentes que nunca la ven. Lo que hace falta, dicen quienes investigan sobre el tema, son conversaciones francas y “alfabetización pornográfica”.

Timothy Jay, a scholar in the science of swearing, has a few choice words about why we curse and how to cut back (if you want to).

Your average daily heart rate is a useful metric; so is your daily step count. Combining the two might be even better.

In her new book, “The Ideological Brain,” the neuroscientist Leor Zmigrod outlines what makes some people prone to rigid thinking.