Brains On! Science podcast for kids

Pinky toes may seem small, but they’re kind of a big deal. Join Molly and co-host Luna Mae as they learn about why we have these tiny toes and what would happen if we didn’t have them. Plus, we talk about animals with two, three, or six toes! Plus, a Mystery Sound that’ll get your ears working overtime.

Click here for a transcript of this episode.

Brains On is a completely independent podcast, and we rely on your contributions to help make all of our shows. You can do that by joining Smarty Pass. As a member you get ad-free versions of all the Brains On Universe shows, bonus episodes, online hangouts with the Brains On crew, discounts on merch and more. Go to ⁠smartypass.org ⁠to learn more and sign up.

Want to see Brains On or Smash Boom Best live? We're about to head out on our fall tour. For links to tickets go to ⁠brainson.org/events⁠.

9/19 Minneapolis, MN (sold out)*

9/26 Charlotte, NC 1

0/11 Dallas, TX*

10/17 Colorado Springs, CO (two shows)

11/7 Norfolk, VA

12/6 Evanston, IL (two shows)

1/31 Princeton, NJ

*Smash Boom Best show

When you hear a good beat, it can be hard not to tap your toe or bob your head. Why is this? It turns out, we may be hardwired to start dancing when we hear certain rhythms. Join Molly and co-host Adriel as they explore how the brain turns sounds into dance moves. Plus, we’ll talk to a real DJ about making beats that get people moving. And a sound that might be tough to dance to: the Mystery Sound.

Guests:

Julia Basso, assistant professor at Virginia Tech

Constantina Theofanopoulou, assistant professor at Rockefeller University

Sophia Eris, Musician and International DJ

Click here for a transcript.

Brains On is a completely independent podcast, and we rely on your contributions to help make all of our shows. You can do that by joining Smarty Pass. As a member you get ad-free versions of all the Brains On Universe shows, bonus episodes, online hangouts with the Brains On crew, discounts on merch and more. go to ⁠smartypass.org ⁠to learn more and sign up.

Want to see Brains On or Smash Boom Best live? We're about to head out on our fall tour. For links to tickets go to ⁠brainson.org/events⁠.

9/19 Minneapolis, MN*

9/26 Charlotte, NC

10/11 Dallas, TX*

10/17 Colorado Springs, CO (two shows)

11/7 Norfolk, VA

12/6 Evanston, IL (two shows)

1/31 Princeton, NJ

*Smash Boom Best show

Black holes happen when you have a super huge, mega-giant amount of stuff --- crammed into a super-tiny, infinitely-small amount of space. AND THEY ARE SUPER COOL! In this episode, we learn all about what black holes are and how we found out they were real. We talk to a black hole hunter who has discovered supermassive black holes. And we find out what a wormhole is and why it might really, be really, really hard to ever find one -- or travel through it. 

Brains On is a completely independent podcast, and we rely on your contributions to help make all of our shows. You can do that by joining Smarty Pass. As a member you get ad-free versions of all the Brains On Universe shows, bonus episodes, online hangouts with the Brains On crew, discounts on merch and more. go to smartypass.org to learn more and sign up.

Want to see Brains On or Smash Boom Best live? We're about to head out on our fall tour. For links to tickets go to brainson.org/events.

9/19 Minneapolis, MN*
9/26 Charlotte, NC
10/11 Dallas, TX*
10/17 Colorado Springs, CO (two shows)
11/7 Norfolk, VA
12/6 Evanston, IL (two shows)
1/31 Princeton, NJ
*Smash Boom Best show

There’s a bunch of vitamins and minerals our bodies need to do their body thing. Our bodies don’t make them, so we get them through food – except for vitamin D! We can get vitamin D from the UV rays from the sun, but the UV rays from the sun can also do damage. Listen to this episode to find out why you have to wear sunscreen, how we’re able to get vitamin D, and how we discovered vitamins in the first place!

Click here for a transcript of this episode.

Brains On is powered by YOU! Become a Smarty Pass member and enjoy ad-free episodes, virtual hangs, bonus content, discounts on merch and more. Head over to the ⁠⁠Smarty Pass page ⁠⁠to find out more.

Want to see Brains On and Smash Boom Best live?!? We just announced fall dates for both show, and there's more to come. Click ⁠⁠here⁠⁠ for ticket info.
9/19 Minneapolis, MN*

9/26 Charlotte, NC

10/11 Dallas, TX*

10/17 Colorado Springs, CO (two shows)

11/7 Norfolk, VA

12/6 Evanston, IL (two shows)

1/31 Princeton, NJ

*Smash Boom Best show

We are super-excited to let you know that our pals at Forever Ago just started a brand new season. Host of Forever Ago, Joy Dolo, will dive into all sorts of cool history including trick or treating, the Wizard of Oz and pizza, just to name a few. The season kicks off with an episode all about how Pokemon was invented. It’s so cool that we want to share it with you right now. And if your a Hoax head, the Hoax Hunters have a bonus Pokemon episode in our Smarty Pass feed. It’s almost too good to be true. But guess what: it is! Until then, enjoy the episode!

This is a sneak peek of a bonus episode available to Smarty Pass subscribers. It’s a follow up to the Forever Ago episode about the history of Pokemon. This time, Marc and Sanden are back as the Hoax Hunters to investigate a phenomenon known as the Pokemon Shock. It was an event where a TV show apparently made thousands of people feel sick. To hear the full episode, sign up for Smarty Pass and support the Brains On Universe.

Plants are pretty chill things, maybe because they are farting all the time! In this episode we explore the world of plant gas. Join Molly and co-host Zsa Zsa as they learn how plants pass gas and why it’s important to know how much tooting trees and bushes do. Plus, a stink-free Mystery Sound!

Brains On is powered by YOU! Become a Smarty Pass member and enjoy ad-free episodes, virtual hangs, bonus content, discounts on merch and more. Head over to the ⁠Smarty Pass page ⁠to find out more.

Click here for a transcript of this episode.

Want to see Brains On and Smash Boom Best live?!? We just announced fall dates for both show, and there's more to come. Click ⁠here⁠ for ticket info.

9/19 Minneapolis, MN*

9/26 Charlotte, NC

10/11 Dallas, TX*

10/17 Colorado Springs, CO (two shows)

11/7 Norfolk, VA

12/6 Evanston, IL

1/31 Princeton, NJ

*Smash Boom Best show

Get ready for some smiles! We’re looking at the science of two things that bring us joy: tickles and cuteness.

We’ll explain why tickles make us giggle and why you can’t tickle yourself. Then we’ll talk about what makes cute things cute and why sometimes we want to eat or smoosh cute things.

Brains On is powered by YOU! Become a Smarty Pass member and enjoy ad-free episodes, virtual hangs, bonus content, discounts on merch and more. Head over to the Smarty Pass page to find out more.

Want to see Brains On and Smash Boom Best live?!? We just announced fall dates for both show, and there's more to come. Click here for ticket info.

9/19 Minneapolis, MN*

9/26 Charlotte, NC

10/11 Dallas, TX*

10/17 Colorado Springs, CO (two shows)

11/7 Norfolk, VA

12/6 Evanston, IL

1/31 Princeton, NJ

*Smash Boom Best show

Walkie talkies are cool tech with a cool name. In today's episode we find out how can one little box let you talk to somebody miles away. Even though we have cell phones that can connect to places around the world, walkie talkies are still quite useful. You can also test your walkie talkie lingo in a special game show. And, we get a visit from our favorite dancing CEO,Gungador, who needs Molly and co-host Sebastian's help while he attends a meeting with the Brains On Dog Advisory Council. All that plus, a brand new mystery sound. Over and out!

Brains On is powered by YOU. We are an independent podcast that depends on listener subscriptions and donations to make our shows. If you're interested in helping, join Smarty Pass. As a thank you, we'll give you access to ad-free versions of all the Brains On Universe shows, virtual hangouts, discounts on merch and so much more. Heat to smartypass.org to find out more.

Click ⁠here⁠ for a transcript of this episode.

Marc and Sanden are back as the Hoax Hunters! This time they look at the case of the Fresno Nightcrawler. In 2007 a man’s security camera recorded something strange outside his house. It looked like sweatpants out for a walk by themselves, with no humans around. Creepy? Kind of. Unexplained? Very. Join the Hoax bros as they explore this event and learn how it inspired artists, musicians, even the tourist board of Fresno, to embrace the weird stuff around us.

Want to support more hoax hunting missions? Join Smarty Pass! That's where you can get ad-free episodes of all the Brains On Universe shows, plus special bonus content, virtual hangouts, discounts on merch and more! Go to smartypass.org to sign up. Thanks!

Click here for a transcript of this episode.

Our brains are amazing machines, but they are also very delicate. We have to wear helmets when we bike, skate, or do other activities where we might bang our skulls. Why is the brain so sensitive? Turns out, it’s a soft blob a lot like tofu, but that softness lets it do some pretty important things. Join Molly and co-host Penny as they learn about our wonderful, squishy brains. Plus, Dwayne the Brain joins us and we’ve got a brand new Mystery Sound.

Brains On is an independent podcast, which means we rely on listener support to make all our shows. You can help by joining ⁠Smarty Pass⁠, where you'll get ad-free episodes, bonus content, online hangouts, discounts on merch and more! ⁠SmartyPass.org⁠

You can find a transcript of this episode here.

Pearls are shiny little things that look great on a bracelet or necklace. They’re made by shell-dwelling creatures called oysters, but how? Dive in as Molly and co-host Katherine explore the underwater world of oysters and other mollusks. They’ll talk with researcher Priya Shukla and producer Menaka Wilhelm to learn how these squishy creatures make pretty pearls. Plus, a game show and a Mystery Sound!

Want to support the show? Join ⁠⁠⁠⁠⁠⁠⁠⁠⁠Smarty Pass⁠⁠⁠⁠⁠⁠⁠⁠⁠ to listen to ad-free episodes or donate!

Click here for a transcript of this episode.

In this episode, we're tackling all the mosquito questions that have been bugging our listeners. Why do they bite? Why do the bites itch? Is scratching them a good idea? Why do some people seem to be more delicious to mosquitoes? How can we keep them away from us? And are mosquitoes good for the world? The Hoax Hunters also make another hoax-tastic appearance.

*Note: if you had a problem with jumbled voices talking over each other, that has been fixed. Just re-download the file or refresh the feed. Appologies - I was trying to shoo away a mosquito.

Want to support the show? Join Smarty Pass for ad-free episodes, hangouts, discounts and more!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠head to our events page⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠. Fall 2026 show announcement coming soon!

We use lightbulbs everyday, but how often do we stop to think about how they work? These genius little inventions are packed with cool science. Molly and co-host Maya will explain how they work step by step. Plus we’ll hear your suggestions for what to shout when you have a bright idea. Oh, and a new Mystery Sound to light up your life. Enjoy!

Want to support the show? Join ⁠⁠⁠⁠⁠⁠⁠⁠⁠Smarty Pass⁠⁠⁠⁠⁠⁠⁠⁠⁠ to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets ⁠⁠⁠⁠⁠⁠⁠⁠⁠head to our events page⁠⁠⁠⁠⁠⁠⁠⁠⁠. Fall 2026 show announcement coming soon!

Click here for a transcript of this episode.

This episode shines a light on crystals, and they’re sparkling right back at us! We’ll zoom way in on a diamond to understand the structure that makes crystals special, and hear about some unexpected crystals, too (hint: chocolate chip cookies contain a few different crystals!). Then, we take a look at how crystals form and get their cool colors. Plus, Marc and Sanden hunt down a hoax about Mesoamerican crystal skulls.

Want to support the show? Join ⁠⁠⁠⁠⁠⁠⁠⁠Smarty Pass⁠⁠⁠⁠⁠⁠⁠⁠ to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets ⁠⁠⁠⁠⁠⁠⁠⁠head to our events page⁠⁠⁠⁠⁠⁠⁠⁠. Fall 2026 show announcement coming soon!

June 20 - Southern Theater, Columbus, OH

June 21 - Turner Hall Ballroom, Milwaukee, WI

We will be back next week with a new episode! This week we have an episode from our sister show Smash Boom Best: Slime vs Slinkies!
Set out these two playthings on a table and see which one your kid grabs first. Is it the gooey, squishy, surprising slime? Or the springy, wiggly, wonderous slinky? Both are fun, one will triumph! Smooshing the competition for Team Slime, it’s RadioLab host Latif Nasser. And stretching toward victory for Team Slinky, it’s podcast producer Hans Buetow. Listen to see which terrific toy takes the top prize. And don’t forget to vote for your favorite at smashboom.org.

Click here to read a transcript of this episode.

Want to support the show? Join Smarty Pass to listen to ad-free episodes or donate!

As Brains On fast approaches 400 episodes, we wanted to re-visit this one. Not only is it our milestone episode 100, but our pal Gungador goes from Most Epic Fighting Battle Realm to a much more challenging setting: high school. We ask why people seem to love the number 100 so much. We also learn some amazing tricks involving the number 100 and fan favorite. There's a super-cool Mystery Sound too, so keep those ears open!

Want to support the show? Join ⁠⁠⁠⁠⁠⁠⁠Smarty Pass⁠⁠⁠⁠⁠⁠⁠ to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets ⁠⁠⁠⁠⁠⁠⁠head to our events page⁠⁠⁠⁠⁠⁠⁠. More shows announced soon!

June 6 - Michigan Theater, Ann Arbor, MI

June 20 - Southern Theater, Columbus, OH

June 21 - Turner Hall Ballroom, Milwaukee, WI

Today we’re sharing with you part of an episode from our new special series, Brains On Universe Presents: Puberty! (the podcast). You can subscribe wherever you listen to podcasts.

This is an excerpt covering stuff that any one of any age might be interested in. Last week, we looked at skin, sweat and hair.

Want to learn more about growing? Check out this Brains On episode: Why do our bodies take so long to grow?

In the Puberty podcast feed, we’ll dive deeper into each topic. And answer your questions, with help from super smart experts.

Want to support the show? Join ⁠⁠⁠⁠⁠⁠Smarty Pass⁠⁠⁠⁠⁠⁠ to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets ⁠⁠⁠⁠⁠⁠head to our events page⁠⁠⁠⁠⁠⁠. More shows announced soon!

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON (2nd show added!)

June 6 - Michigan Theater, Ann Arbor, MI

June 20 - Southern Theater, Columbus, OH

June 21 - Turner Hall Ballroom, Milwaukee, WI

Click ⁠here⁠ for a transcript of this episode.

Today we’re sharing with you part of an episode from our new special series, Brains On Universe Presents: Puberty! (the podcast). You can subscribe wherever you listen to podcasts.

This is an excerpt covering stuff that any one of any age might be interested in. Last week, we answered: what’s puberty anyway?

In the Puberty podcast feed, we’ll dive deeper into each topic. And answer your questions, with help from super smart experts.

Want to support the show? Join ⁠⁠⁠⁠⁠Smarty Pass⁠⁠⁠⁠⁠ to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets ⁠⁠⁠⁠⁠head to our events page⁠⁠⁠⁠⁠. More shows announced soon!

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON (2nd show added!)

June 6 - Michigan Theater, Ann Arbor, MI

June 20 - Southern Theater, Columbus, OH

June 21 - Turner Hall Ballroom, Milwaukee, WI

Click here for a transcript of this episode.

We’re making a special eight episode show called Brains On Universe Presents Puberty (The Podcast). You can subscribe wherever you listen to podcasts. Over the next few weeks we’re going to play some excerpts from the series for you here.

These samples cover stuff like how hormones help us grow, how they change our skin - think zits – and how they affect our moods. We picked topics that should be appropriate for everyone interested in how bodies grow.

In the Puberty podcast feed, we’ll dive deeper into each topic. And answer your questions, with help from super smart experts.

Want to support the show? Join ⁠⁠⁠⁠Smarty Pass⁠⁠⁠⁠ to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets ⁠⁠⁠⁠head to our events page⁠⁠⁠⁠. More shows announced soon!

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON (2nd show added!)

June 6 - Michigan Theater, Ann Arbor, MI

June 20 - Southern Theater, Columbus, OH

June 21 - Turner Hall Ballroom, Milwaukee, WI

Click ⁠here for a transcript of this episode.

If you were on a merry-go-round that was spinning super fast, you’d feel it. But the Earth is always spinning and we don’t feel a thing. Why is that? Join Molly and Reean as they explore the science of spin. Plus we find out how liquid sloshing around in our ears can make us feel dizzy. And speaking of ears, get yours ready for an all new Mystery Sound.

Want to support the show? Join ⁠⁠⁠Smarty Pass⁠⁠⁠ to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets ⁠⁠⁠head to our events page⁠⁠⁠. More shows announced soon!

May 9 - Liberty Hall, Kansas City, KS

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON (2nd show added!)

June 6 - Michigan Theater, Ann Arbor, MI

June 20 - Southern Theater, Columbus, OH

June 21 - Turner Hall Ballroom, Milwaukee, WI

Click here for a transcript of this episode.

We're making a new limited series to tackle a topic that lots of our listeners are curious about. Puberty!

It’s a lot. There are the awkward conversations and the questions we’re too nervous to ask and the sometimes uncomfortable experience of living in a body that’s changing fast (and publicly!).

This podcast is here to help. Hosted by Molly Bloom, of the award-winning science podcast Brains On, and co-hosted by high schoolers who've just been through it, Puberty! (The podcast) is for everybody — and every body.

Designed for kids 7-12, the show will cover everything from brain chemicals to consent, in a straight-forward and digestible package. This is a safe space for young people to understand their bodies and their brains, and it’s a resource for parents to tackle otherwise difficult topics.

Experts, including Dr. Cara Natterson (Less Awkward), Chris Pepper (Talk to Your Boys), Nora Gelperin (Advocates for Youth), and Erin Walsh (Spark & Stitch Institute), provide science-filled explanations and answer listener questions.

Search for Brains On Universe Presents: Puberty! (The podcast) wherever you listen!

We wash our hands all the time, but do you ever wonder why? It turns out that soap is super good at attaching to dirt and germs and carrying that gunk off skin. Join Molly and co-hosts Hope and Heaven as they zoom in on soap to see how this sudsy stuff cleans so well. Plus we’ll learn how soap was likely invented and meet some pioneers who helped prove that washing hands keeps us healthy. Oh, and everyone’s favorite viral podcasters, Kara and Gilly, are back! Plus a new Mystery Sound.

Want to support the show? Join ⁠⁠Smarty Pass⁠⁠ to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets ⁠⁠head to our events page⁠⁠. More shows announced soon!

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON (2nd show added!)

June 6 - Michigan Theater, Ann Arbor, MI

June 20 - Southern Theater, Columbus, OH

June 21 - Turner Hall Ballroom, Milwaukee, WI

Click here for a transcript of this episode.

Humans have visited the moon but we’ve never lived there. Could we build a home on our lunar neighbor? Join Molly and co-host Ira as they find out why the moon can be a dangerous place, and what it would take to live there. We’ll imagine a visit to a lunar hotel, hear about all the stuff humans have left up there and even hear a song sung by the Moon herself!

Featured Expert: Phil Plait, astronomer, journalist and author of several books, including, Under Alien Skies: A Sightseer’s Guide to the Universe, which uses science and imagination to paint a picture of what it would be like to vacation on the moon.
Resources:Learn more about NASA’s Artemis program which aims to bring humans back to the moon.

Want to support the show? Join ⁠Smarty Pass⁠ to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets ⁠head to our events page⁠. More shows announced soon!

April 25 - Marines Memorial, San Francisco, CA (2nd show added!)

April 26 - Newmark Theater, Portland, OR

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON (2nd show added!)

June 6 - Michigan Theater, Ann Arbor, MI

June 20 - Southern Theater, Columbus, OH

June 21 - Turner Hall Ballroom, Milwaukee, WI

Sports and science go hand in hand, especially when it comes to softball and baseball. Join Molly and co-host Caris as they answer more of your questions about these two ballgames. Like why are bats measured in ounces? Or why do some players wear black paint under their eyes? Plus, we’ll hear more of your chants and guess an all new Mystery Sound.

Want to support the show? Join Smarty Pass to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets head to our events page. More shows announced soon!

April 25 - Marines Memorial, San Francisco, CA (2nd show added!)

April 26 - Newmark Theater, Portland, OR

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON (2nd show added!)

June 6 - Michigan Theater, Ann Arbor, MI

June 20 - Southern Theater, Columbus, OH

June 21 - Turner Hall Ballroom, Milwaukee, WI

Click here for a transcript of this episode.

Baseball and softball are both a feat of physics, from the curve of a pitch to the swing of a bat. Today, we’re exploring the science of these popular pastimes. Join Molly and co-host Kian as they learn about curve balls and the stuff inside a ball. Plus, our listeners share their chants for Team Science! Oh, and what’s that noise? It’s a brand new mystery sound. Play ball!

Want to support the show? Join Smarty Pass to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets head to our events page. More shows announced soon!

April 11 - Walker Theater, Chattanooga, TN

April 12 - Carolina Theater, Durham, NC

April 25 - Marines Memorial, San Francisco, CA (2nd show added!)

April 26 - Newmark Theater, Portland, OR

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON (2nd show added!)

Click here for an episode transcript

See omnystudio.com/listener for privacy information.

Ever look closely at a raspberry and notice it could use a shave? Those tiny hairs are actually super important. And thankfully totally edible. Join Molly and co-host Zoe-Samarah as they learn all about this fantastic little fruit, and why some raspberry flavored foods are actually colored blue. All that and a Mystery Sound that’ll feel like a snack for the ears!

Want to support the show? Join Smarty Pass to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets head to our events page. More shows announced soon!

April 11 - Walker Theater, Chattanooga, TN

April 12 - Carolina Theater, Durham, NC

April 25 - Marines Memorial, San Francisco, CA (2nd show added!)

April 26 - Newmark Theater, Portland, OR

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON (2nd show added!)

Click here for an episode transcript

See omnystudio.com/listener for privacy information.

Have you heard of the Bermuda Triangle? It’s an area of the Atlantic Ocean that some people think can make ships and planes mysteriously disappear. In this episode, Marc and Sanden, aka the Hoax Hunters, investigate this weird and wild patch of water. Turns out the Triangle isn’t as unusual as it seems. Plus, Molly tries to stump the Hoax Hunters with a new mystery sound.

Want to support the show? Join Smarty Pass to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets head to our events page. More shows announced soon!

March 28 - Center Stage, Atlanta, GA

March 29 - Amaturo Theater, Fort Lauderdale, FL

April 11 - Walker Theater, Chattanooga, TN

April 12 - Carolina Theater, Durham, NC

April 25 - Marines Memorial, San Francisco, CA (2nd show added!)

April 26 - Newmark Theater, Portland, OR

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON (2nd show added!)

Click here for an episode transcript

See omnystudio.com/listener for privacy information.

Flowers are famous for their smells. Most are sweet, but a few are downright stinky. Either way, the science of how and why they make these scents is fascinating. Join Molly and co-host Isla as they learn about pollinators, flower smells and the mighty corpse flower! Plus a smell for your ears: the Mystery Sound!

Guest: Dr Kelsey Byers, evolutionary chemical ecologist and group leader at the John Innes Center.

Want to support the show? Join Smarty Pass to listen to ad-free episodes or donate!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets head to our events page. More shows announced soon!

March 7 - Turner Hall Ballroom, Milwaukee, WI

March 8 - Fitzgerald Theater, St. Paul, MN

March 28 - Center Stage, Atlanta, GA

March 29 - Amaturo Theater, Fort Lauderdale, FL

April 11 - Walker Theater, Chattanooga, TN

April 12 - Carolina Theater, Durham, NC

April 25 - Marines Memorial, San Francisco, CA

April 26 - Newmark Theater, Portland, OR

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON

Click here for an episode transcript

See omnystudio.com/listener for privacy information.

What's better than a mystery sound? How about 11 mystery sounds! We have mystery sounds from listeners all over the world to share with you, plus two from scientists. And our co-host Juniper will try to stump Molly with a mystery sound of her own!

Click here to read a transcript of this episode.

Want to support the show? Join Smarty Pass to listen to ad-free episodes or donate!

See omnystudio.com/listener for privacy information.

Every spring we set our clocks one hour forward. Every fall we move them one hour back. It’s a strange ritual when you think about it, so why do we do it? Join Molly and co-host Ava as they explore the seasons and why days are shorter in the winter and longer in the summer. We’ll hear about the history of Day Light Saving and play a game. And it’s always time for a Mystery Sound! So set an alarm so you don’t forget to tune in to this episode!

Want to support Brains On and all of the shows in the Brains On Universe? Sign up for Smarty Pass. You'll get ad-free episodes of all our shows, bonus content, virtual hangouts, discounts on merch and more!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets head to our events page. More shows announced soon!

March 7 - Turner Hall Ballroom, Milwaukee, WI

March 8 - Fitzgerald Theater, St. Paul, MN

March 28 - Center Stage, Atlanta, GA

March 29 - Amaturo Theater, Fort Lauderdale, FL

April 11 - Walker Theater, Chattanooga, TN

April 12 - Carolina Theater, Durham, NC

April 25 - Marines Memorial, San Francisco, CA

April 26 - Newmark Theater, Portland, OR

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON

Click here for a transcript of this episode.

See omnystudio.com/listener for privacy information.

Exciting news! We’ve announced a bunch of new tour stops for this spring! Learn more about the show and get tickets here!

Mar 7............MILWAUKEE

Mar 8..................ST PAUL

Mar 28..............ATLANTA

Mar 29.....FT LAUDERDALE

Apr 11......CHATTANOOGA

Apr 12.................DURHAM

Apr 25.....SAN FRANCISCO

Apr 26.............PORTLAND

May 30...............BUFFALO

May 31..............TORONTO

Jun 6.............ANN ARBOR

Get tickets at brainson.org/events -- hope to see you there!!

See omnystudio.com/listener for privacy information.

HARVEY, our omnipresent virtual voice assistant, gets a software update that makes him go bananas for bananas. And if we talk about anything except bananas, he turns the microphones off! We talk to geneticist Dr. Janina Jeff about how much DNA we share with a banana, find out why bananas make other fruits ripen, how bananas grow, and where that slipping on a banana peel joke came from. Speaking of jokes, we'll hear a bunch of banana jokes from listeners too! Plus: The Moment of Um answers the question: "Why are peaches fuzzy?"

You can hear more from Dr. Jeff on her podcast In Those Genes.

Silent film expert Lea Stans has a wonderful blog post about the history of the banana peel joke that you can read right here. You can see some of those early comics that featured the joke! 

https://www.youtube.com/watch/RMDgmHB4znc

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Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets head to our events page. More shows announced soon!

March 7 - Turner Hall Ballroom, Milwaukee, WI

March 8 - Fitzgerald Theater, St. Paul, MN

March 28 - Center Stage, Atlanta, GA

March 29 - Amaturo Theater, Fort Lauderdale, FL

April 11 - Walker Theater, Chattanooga, TN

April 12 - Carolina Theater, Durham, NC

April 25 - Marines Memorial, San Francisco, CA

April 26 - Newmark Theater, Portland, OR

May 30 - Electric City, Buffalo, NY

May 31 - Royal Theatre, Toronto, ON

See omnystudio.com/listener for privacy information.

We’re all part of a generation, that’s a large group of people born around the same time as us. These generations have names too, like Gen X, Baby Boomers or Gen Alpha. Who came up with these generations and why do we have them? We’ll speak to experts and learn what makes each generation unique. Plus, what if you could rename your generation? Plus, Mr. Bonejangles can’t remember his birthday so he has no idea what generation he’s part of! All this and a timeless mystery sound. Enjoy!

Guests:Dr Jean Twenge: Professor of psychology at San Diego State University, and author of iGen, Generations, and 10 Rules for Raising Kids in a High-Tech World.

Kim Parker: Director of social trends research at Pew Research Center.

Corey Seemiller: Professor of leadership studies in education and organizations at Wright State University, and author of Generation Z.

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Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets head to our events page. More shows announced soon!

Feb 21 - Just for Laughs Festival, Vancouver, BC

Feb 22 - The Neptune, Seattle, WA

March 7 - Turner Hall Ballroom, Milwaukee, WI

March 8 - Fitzgerald Theater, St. Paul, MN

March 28 - Center Stage, Atlanta, GA

March 29 - Amaturo Theater, Fort Lauderdale, FL

Click here for a transcript of this episode

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Our stomachs are full of a powerful acid, one that can burn your skin and even melt metal. So why doesn’t this stuff burn a hole through our bellies? We’ll find out how our stomachs protect the rest of us from this acid. Plus, we’ll learn about some of the wildest ways animals digest food and learn about how a serious accident helped us. Don't forget to listen to the Mystery Sound and the latest suggestions for new rooms in our headquarters.

Want to support Brains On and all of the shows in the Brains On Universe? Sign up for Smarty Pass. You'll get ad-free episodes of all our shows, bonus content, virtual hangouts, discounts on merch and more!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets head to our events page. More shows announced soon!

Feb 21 - Just for Laughs Festival, Vancouver, BC

Feb 22 - The Neptune, Seattle, WA

March 7 - Turner Hall Ballroom, Milwaukee, WI

March 8 - Fitzgerald Theater, St. Paul, MN

March 28 - Center Stage, Atlanta, GA

March 29 - Amaturo Theater, Fort Lauderdale, FL

Click here for a transcript of this episode

See omnystudio.com/listener for privacy information.

Today we’re stepping into the ring for a battle of the insect world. Molly and co-host Kiaan try to find out if a spider can eat a wasp. They speak with Dr. Paula Cushing. She has been researching spiders for over three decades. Plus, we flip the script and ask if a wasp can eat a spider. Then, Molly goes full game show mode and puts Kiaan in the contestant chair to play Spidey Sense. We also have a brand new Mystery Sound and a big mailbag reveal.

Want to support Brains On and all of the shows in the Brains On Universe? Sign up for Smarty Pass. You'll get ad-free episodes of all our shows, bonus content, virtual hangouts, discounts on merch and more!

Want to see Brains On live?!? We are probably coming to a city near you. For a complete list of shows and links to tickets head to our events page. More shows announced soon!

Feb 21 - Just for Laughs Festival, Vancouver, BC

Feb 22 - The Neptune, Seattle, WA

March 7 - Turner Hall Ballroom, Milwaukee, WI

March 8 - Fitzgerald Theater, St. Paul, MN

March 28 - Center Stage, Atlanta, GA

March 29 - Amaturo Theater, Fort Lauderdale, FL

Click here for a transcript of this episode

See omnystudio.com/listener for privacy information.

Stickers are everywhere. They label our groceries, cover our car bumpers, and decorate our notebooks. But how do they stick? We’ll zoom in on a sticker to see how a special glue helps a sticker cling to a surface. Plus, we’ll hear about stickers that can help people heal from surgeries. We’ll also find out what kind of stickers Bob collects, and guess a new Mystery Sound.

Guest: Phillip Messersmith, professor of material science and engineering at the University of California, Berkeley.

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There’s more to sloths than slowness. They’re great at saving energy, hanging upside down, and swimming! In this episode, Sloth Appreciation Society founder Lucy Cooke stops by to tell us all about these amazing animals. We also get into a sloth mystery: The Case of the Perilous Poop Journey. Luckily, there’s a sloth sleuth on the case. And sloths aren’t the only animals who aren’t in a hurry — a few others show off their slowest skills.

There’s also a Mystery Sound for you to guess. Stay sloooooooooow!

Guests

Lucy Cooke, zoologist and founder of the Sloth Appreciation Society

Jonathan Pauli, UW-Madison Forest and Wildlife Ecology

Dr. Sushma Reddy, Breckenridge Chair of Ornithology, Bell Museum

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Have you ever heard of Lake Natron? It’s located in Tanzania, Africa, and, if you believe the internet, it can instantly petrify anything that touches it. Lucky for us, we have a direct line to the Hoax Hunters (aka Sanden and Marc) - they love myths, and they hate getting tricked.

Along the way to saying yea or nay to this stoney phenomenon, the Hoax Hunters speak with Neovitus Sianga. Not only does he have firsthand knowledge of the lake, but he works for African People and Wildlife, where he helps protect the environment around Lake Natron.

We also have a brand new Mystery Sound… and Marc and Sanden start a cleaning service?!?

Guest: Neovitus Sianga

Want more Hoax Hunters? Here are a few more episodes featuring our hoax hunting pals:

Are UFOs real?
Lost Cities
Mermaids, Kraken and Loch Ness Monster
Bigfoot, Unicorns and Dragons

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Click here for a transcript of this episode. 

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Skunks can stink, no doubt about it. But that stink is actually a superpower! Join Molly and co-host Diya as they find out how these critters use their smell to scare away enemies, what the smell is made of, and how to make your own de-skunking potion. Plus, Wombat Pete drops by to promote his new music festival, we speak to some skunk experts, and we try our best to guess a new Mystery Sound.

Don't forget the de-skunking potion mnemonic: 

4 Cats Had Problems

Queen Coughed Beside Suzie's Tenth Lasagna, Don't Sneeze

Translation: 

4 Cups hydrogen peroxide

Quarter Cup baking soda

Teaspoon Liquid Dish Soap

Guest: Marie Tosa, Research Scientist with the Washington Department of Fish and Wildlife. 

Guest: Ted Stankowich, Professor in the Department of Biological Sciences and CSU Long Beach.

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 We're on a little winter break and we're gonna be back with a new Brains On episode next week. This week we have an episode of our Sister show forever ago to share with you. If you're interested in origin stories or history, this is the show for you. You can subscribe wherever you listen to Brains On.

Get ready for an out-of-this-world episode! Joy and co-host Elsa are trapped in a black hole with a baby elephant and a mountain of old junk! 

They’ll explore the history of a super secret astronaut testing program for women called the “Fellow Lady Astronaut Trainees.” This group of bold, highly-trained pilots spent years making a case for why women are just as qualified to become astronauts as men! 

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 We're on a little winter break here, but we're gonna be back with a new episode of Brains On January 6th. Until then, we have an episode of our sister podcast, smash Boom. Best to share with you the episode. Features some familiar voices. Me, mark, and Sandon, enjoy the show!

Whether you like your wheels big or small, this debate is for you! It’s Monster Trucks vs Hot Wheels. It’s a battle between Brains On besties Marc Sanchez and Sanden Totten. Marc goes full throttle for Team Monster Trucks and Sanden speeds toward victory for Team Hot Wheels. Who will win? Head over to smashboom.org to vote and listen to see who our judge crowns the king of cars.

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The Brains On crew is hitting the road in 2026, and our first shows have just been announced. If you like fun, games, dancing, optical illusions and... Mystery Sounds, check out Your Brain is Magic.

Head to brainson.org/events to get tickets for the following shows:

1/17 Newark, NJ Victoria Theater

1/18 Red Bank, NJ The Vogel

1/23 San Diego, CA The Observitory

1/24 Aneheim, CA House of Blues

2/21 Vancouver, BC Playhouse Theater (JFL Festival)

2/22 Seattle, WA Neptune Theater

If you don't see your city listed, we're adding more dates, so keep checking back!

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In our final look at metal, we explore how metal wires changed the world. Once humans figured out how to send little blasts of electricity through metal, we quickly developed lots of uses for this. One was a new way of communicating called the telegraph. Join Molly and co-host Ava as they team up with Dylan Thuras, co-founder of Atlas Obscura to learn how people laid hundreds of miles of wire in hopes of sending messages across oceans. Plus, the new Brains On Headquarters is having an opening ceremony, and there’s a brand new Mystery Sound to guess!

Guest: Dylan Thuras, co-author of The Atlas Obscura Explorer's Guide to Inventing The World.

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Humans have been fascinated by metal for thousands of years. But it took us a long time to master making things with metal. In this episode we go back in time to learn how Japanese swords were forged, how swings were used to make thin metal wires and why steel cables saved so many lives. Molly and co-host Ava are joined by Dylan Thuras, co-founder of Atlas Obscura for part two of this deep dive on all things metal. Plus, Marc meets some talking boxes and there’s an all new Mystery Sound.

Guest: Dylan Thuras, co-author of The Atlas Obscura Explorer's Guide to Inventing the World.

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Metal is amazing. It can be super strong like a steel beam. Or super flexible, like a copper wire. Humans have been obsessed with metals of all kinds for a very long time. This is part one a three-part look at how humans have used metal throughout history. Molly and co-host Ava are joined by Dylan Thuras, co-founder of Atlas Obscura, to look at how Earth got metal in the first place, how humans first found and used this stuff, and when we started making primitive tools with it. Plus, Marc and Sanden have some problems unpacking the new Brains On library. All that and a Mystery Sound!

Guest: Dylan Thuras, co-author of The Atlas Obscura Explorer's Guide to Inventing the World.

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Most of us take listening to music or podcasts for granted. You can find them on your phone, in the car or just about anywhere you can imagine. But, have you ever wondered how those sounds were captured in the first place? To find out, Molly and Co-host Canyon shrink down and follow a sound waves as it is recorded and stored. They meet a robot who really loves to eat old school media, like cassettes and CDs. And they learn how speakers turn information into the music we hear. All that plus a new mystery sound.

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We treat dogs like they're part of the family. But do they know they are a different species, or do they think they're just short, four-legged people?

In this episode, canine cognition researcher Alexandra Horowitz helps us puzzle out this question. We’ll also find out what happens (or doesn’t) when a dog looks in the mirror. Dogs are always dozing, and we’ll check in to see if they are dreaming too. And, we take a quick trip around the world in the language of barks. All that, plus a brand new Mystery Sound!

Guest: Alexandra Horowitz - Dog Cognition Lab

Guest: Vanessa Woods - Duke Puppy Kindergarten

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Today’s episode is full of Mystery Sounds from around the world. Molly and co-host Rehema are joined by sonic explorer Thomas Rex Beverly, who travels the globe to capture the sounds of the natural world. He brings us some beautiful head-scratchers that really must be heard to be believed. Plus, we turn the tables on Thomas and ask him to guess some sounds you sent in.

Put on your detective hat, break out the magnifying glass, and listen close! It’s time for the Mystery Sound extravaganza!

Guest: Thomas Rex Beverly

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Octopus, more like ROCK-topus! Because these creatures bring the excitement. They can shape shift to match their surroundings. They have three hearts and teeth on their tongues! And they are super smart. Join fill-in host Rosie duPont and co-host Izumi as they explore the world of their eight-armed wonders. They’re joined by Dr. Jennifer Mathers, a biologist and psychologist who studies octopus cognition, and Ophelia, who is a chatty octopus. You can also play along with our octopus themed game show. All that plus a brand new Mystery Sound and mail from our listeners!

Guest: Dr. Jennifer Mathers, author of Octopus Mind

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