You may have noticed some strong smells coming from your feet, your friend's breath, or your brother's armpit. Where do these body odors come from? We'll meet the microscopic organisms responsible and visit the kingdom of Footsteros. We'll also find out why we might find these naturally occurring smells so disgusting. Plus: A brand new Moment of Um answers the question: Why do stink bugs stink? This episode is sponsored by Cloud Control Cat Litter by Arm & Hammer, Bona Premium Spray Mop (bona.com/brainson), and Quip (getquip.com/brainson). You can support the show at brainson.org/donate
Forever echo: Can a sound wave go on forever?
Today we shout out our love for the ECHO! (echo echo) Discover how these curious callbacks happen and why we hear them in some places but not others. We'll also play you the longest echo in the world and take you to an echo-proof room. Plus, an actual echo stops by to share its new podcast and we hear the answer to this Moment Of Um question: why can wild animals drink dirty water when humans need clean water? Today’s episode is sponsored by Loacker (loackerlove.com/powermom2019), Goodnight Stories for Rebel Girls the Podcast (rebelgirls.co/podcast), Philo (philo.tv/brains) and New Cloud Control Cat Litter by Arm & Hammer. You can support the show at brainson.org/donate
The hows and whys of hair
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 humans have hair and not fur? Why is there hair on the top of our heads? How does hair grow? How does hair become curly or straight? Plus: A brand new Moment of Um answers the question: "Why does my dad get fuzz in his belly button?" This episode is sponsored by Philo (philo.tv/brains), New Cloud Control Cat Litter by Arm & Hammer, Bona Premium Spray Mop (bona.com/brainson) and Goodnight Stories for Rebel Girls the Podcast (rebelgirls.co/podcast). You can support Brains On at brainson.org/donate
Why are smartphones so hard to put down?
Screens are everywhere these days! We’re taking a look at why smartphones are so addictive, and how our devices affect us. Our co-hosts took on a bold challenge for this episode: they went a week without phones or tablets. We’ll hear how their experiment went, then Sanden will fill us in on the brain chemical that trains us to love our screens. We'll also learn why the predictability of messages and alerts on smartphones makes them extra hard to put down. Plus, we’ll get a few tips from Catherine Price, the author of How to Break Up With Your Phone. Price has more resources for screen time habits at https://phonebreakup.com/. And! A new moment of Um: why are bruises blue, and how do we get them? This episode is sponsored by "The Last Kids on Earth" by Max Brallier, available wherever books are sold, and Quip (getquip.com/brainson). You can support the show at brainson.org/donate
Mystery Sound Extravaganza 2019
This episode is an ear-tickler! Guess your way through eleven mystery sounds — one from a scientist, and ten from listeners like you! Plus, another mystery: what’s making Marc and Sanden dance to the sounds of a door jamb and a printer? Stick around for all these reveals, and the answer to a new Moment of Um: Why is air invisible?
This episode of Brains On is sponsored by the Kevin Henkes book, "Sweeping up the Heart,” Panama City Beach (visitpanamacitybeach.com), and Philo (philo.tv/brains). You can support the show at brainson.org/donate