Our Brains Evolved to Socialize -but Max Out at About 150 Friends

The size of our social networks is limited even in the age of social media

How to Handle Making More—or Less—Money Than Your Friends

A change in someone’s financial situation can upend relationships. The best advice: Talk about it.

What Your Friendships Need Is a Good Fight

Confronting a friend when they’ve hurt you can ultimately deepen your bond

Remembering a Friend, One Saved Voicemail at a Time

Mementos of a relationship can bring back memories and joy after a loved one has died