The Trash Trail: Why is there so much plastic...

The hair on our heads is on our minds. We have fun with follicles and learn about how they make hair. Our experts help us decipher what makes hair black or brown, blonde or red, and even why it turns gray. From eye lashes to ear and nose hair, this episode has it all. Why do huma ...  Show more

This is a sneak peak of a bonus episode available to Smarty Pass members. It’s a follow up to our Forever Ago episode on the history of pizza. In this one, we look at the man who made pineapple on pizza a thing. Plus, we tell the story of how pineapple pizza created drama between ...  Show more

In episode 49, we learn the good and bad of plastic.  Plastic is so useful that we find it in almost all of our belongings, yet the qualities of plastic that make it so useful are the same that make it so dangerous for our environment and for marine life.

Season 2 Final ...

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Think about it for a second, plastic is everywhere. What plastic things are around you right now? What plastic things do you use everyday? This week, Melissa and Jam dive right into the proverbial (and sort of literal) ball pit. What even is plasti ...

Plastics are everywhere -- they're in our favorite electronic devices, they package our food and insulate our homes. Today, the total mass of plastic is twice the total mass of all living organisms on the planet, and it's starting to change the processes that allow the Earth's cl ...  Show more

Plastic is a part of so many of the things we use every day. But just what IS it? We asked University of Minnesota professor Frank Bates to help us find the answer. Got a question you’ve been bottling up? Send it to us at BrainsOn.org/contact, and we’ll pla-stic to the topic. See ...  Show more