You’ve heard of plastic polluting oceans. But what if it’s polluting you—your brain, your reproductive system, even your unborn children?

In this eye-opening episode, we speak with Prof. Matthew Campen, a scientist at the University of New Mexico, whose latest studies have uncovered evidence of microplastics in placentas, reproductive organs and brains of humans—particularly in the frontal cortex, where decision-making and personality live.

We explore how these plastic particles are entering our bodies (hint: it’s not just your water bottle), what they might be doing to us, and why scientists are just beginning to understand the true scope of the issue. From declining sperm counts to potential links with dementia, this episode asks a critical question: Are microplastics the next big public health crisis?

Hello listeners…we're re-releasing one of our favorite Big Brains episodes—an incredibly insightful conversation with psychologist Adam Alter. If you've ever felt stuck in your life or career, this episode offers practical strategies and surprising science to help you move forward.

From why your best ideas might come after you feel like giving up, to what Netflix can teach us about breaking through inertia, this episode is packed with revelations.

We’ll be back with brand-new episodes starting in August—also, check out our new YouTube page where you can now watch video versions of Big Brains.

One of the benefits of producing this podcast at the University of Chicago is that there are often events on campus that bring in not just one Big Brain, but many in order to find answers to the some of the most complex problems of our time. I recently had the pleasure of hosting one such event on artificial intelligence that we want to share with you today. It was part of the Graham School’s Leadership & Society Initiative Symposium, examined how AI could change everything and, more importantly, whether it should.

Artificial intelligence is evolving faster than most of us can keep up with—and its impact is already reshaping our lives, from the hospital to the courtroom to the art studio. Is AI moving too fast? Are we focusing on the wrong questions? And what comes after today’s generation of models? It’s a candid, complex, and eye-opening conversation you won’t want to miss.