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
Carnivores: Plants and animals that bite back
Most plants get the energy and nutrients they need from water, sunlight, air and soil. But carnivorous plants get key nutrients from a different source: bugs. We’ll find out how they do it and talk about the mystery of how venus fly traps snap shut. Plus: Two gardeners – one very experienced and one just starting out – offer their tips for growing venus fly traps.
So that’s plants, but what about animals? Carnivores are animals that only eat other animals – so how do they get the vitamins, minerals and fiber that we humans get from eating plants? We take a trip to a salad bar with some animal pals to find out. This episode is sponsored by: Bona premium spray mop (bona.com/brainson), The Kevin Henkes book, ""Sweeping up the Heart,” Panama City Beach, (visitpanamacitybeach.com), Madison Reed hair color (madison-reed.com) - use promo code brainson at checkout for 10% off. You can support the show at brainson.org/donate
Flush! Where does our poo and pee go?
Every time you flush, your poo and pee start an epic journey. From the toilet, to the sewers, to a treatment plant, our waste travels quite a distance only to end up cleaner by the end. We'll hear from a "PooTube" star about her experience with "the flush." We'll also hear about ancient sewers, a "fatberg" under London and a toilet that cleans waste on site. Plus, our Moment of Um answers why you can feel your heart beating in your neck of all places.
Sponsors for this episode include:
The new Kevin Henkes book, "Sweeping Up The Heart,” Panama City Beach (visitpanamacitybeach.com), Calm (Calm.com/brainson) for 25% off premium subscription, Quip (getquip.com/brainson) to get your first refill pack free. You can support the show at brainson.org/donate