We've done several podcasts on America's declining fertility rate, and why South Korea has the lowest birthrate in the world. But we've never done an episode on the subject quite like this one. Today we go deep on the psychology of having children and not having children, and the cultural...

Today’s episode is about the science of breathing—from the evolution of our sinuses and palate, to the downsides of mouth breathing and the upsides of nasal breathing, to specific breath techniques that you can use to reduce stress and fall asleep fast. Our guest is James Nestor, the author of...