Even though we still live in a big-boob bubble, more women are voluntarily reducing their breast size. Others are happily deciding to “go flat” after cancer. Trans women are learning how to lactate - are men next? Are we entering a post-boob universe, one in which we all take more control of what...

Retailers are now selling bras with princess characters on them. Girls are reaching puberty earlier than ever before. In this episode, we talk to some families and experts at the center of the quest to understand how modern life is changing breasts and what it means for our future.