Hello Big Brains listeners! Our podcast is coming up on an important milestone … our 100th episode! As part of the month-long celebration, we’re looking back at some of our favorite episodes—highlighting a different world-changing idea or discovery each week.

The way we talk is not something we spend a lot of time thinking about. But, when it comes to communicating, what we’re saying may only be as important as how we say it.

That’s what Prof. Katherine Kinzler of the University of Chicago argues in her new book, "How You Say It: Why You Talk the Way You Do—And What It Says About You". It's an exploration of how speech creates and deepens our social biases.