

Brains On! Science podcast for kids
American Public Media
Brains On!® is a science podcast for curious kids and adults from American Public Media. Each week, a different kid co-host joins Molly Bloom to find answers to fascinating questions about the world sent in by listeners. Like, do dogs know they’re dogs? Or, why do feet stink? Plus, we have mystery sounds for you to guess, songs for you to dance to, and lots of facts -- all checked by experts.
Episodes
Mentioned books

Feb 16, 2021 • 28min
What's behind the waves and tides?
In this encore episode, we answer the questions: How does the moon control the tides? Where do waves come from? And what’s it like to live in a tide pool?Sir Isaac Newton drops by and drops some knowledge. He helps explain why the tides ebb and flow. Then, an oceanographer/surfer tells us where waves come from and how they get their shape – cowabunga! Plus we hear about what it’s like for marine life that move to a new neighborhood once or twice a day. Sometimes it’s underwater, sometimes it’s not. Plus a brand new Moment of Um answers the question: Why don’t our ears have bones? And there’s a new group of listeners to be added to the Brains Honor Roll.This episode was originally published on Aug. 30, 2016.This episode is sponsored by Sun Basket (sunbasket.com/brainson and promo code BRAINSON)

Feb 2, 2021 • 36min
Let's go bananas!
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/RMDgmHB4zncToday’s episode is sponsored by: KiwiCo (kiwico.com/brainson code: BRAINSON)Purple (purple.com/BRAINSON10 promo code BRAINSON10)

Jan 26, 2021 • 36min
A super special shot: All about coronavirus vaccines
In December, people started getting vaccinated against COVID-19. This is a huge scientific accomplishment and important step in making it safe for us to hang out in person again. So how did scientists develop these vaccines so fast? And how did they test the vaccines to make sure they’re safe? And how do these mRNA vaccines work?We have answers to all your questions, plus New York Times science journalist Apoorva Mandavilli explains what scientists have found out about how long immunity lasts to this new coronavirus. And Kara and Gilly are back with a cow-side chat about herd immunity. Plus: A new mystery sound and a Moment of Um that answers the question, "What would happen if the moon fell down onto earth?"Today’s episode is sponsored by Sitka Salmon Shares (http://sitkasalmonshares.com/brainson)

Jan 19, 2021 • 22min
Meet Gitanjali Rao, Time Magazine's first-ever Kid of the Year
Today we have a special episode featuring an old friend of ours -- scientist and inventor Gitanjali Rao. Time Magazine recently named her the first-ever Kid of the Year! We first met Gitanjali back in 2018, when she was the co-host for a series of episodes we did all about water. Back then, she was a 12 year old who had recently won 2017 Discovery Education 3M Young Scientist Challenge. Now, she's a very busy 15 year-old who is an inventor, STEM advocate and author. Molly and Gitanjali chat about how kids can turn their ideas into reality, and why kids shouldn't be afraid to share their viewpoints and skills with the world -- we need them!Gitanjali has also written a book, which you can check out here.Also, you can hear Gitanjali judge a very science-y Smash Boom Debate: Helium vs Neon!Check out the water series that Gitanjali co-hosted:What’s in your water?The wonderful weirdness of waterKeeping water healthy, one clue at a timeBurning rivers of fire

Jan 12, 2021 • 35min
How do synthesizers work?
Synthesizers are a very recent invention, especially when you compare them to acoustic instruments, like pianos and guitars. In this episode, we learn how these machines with keys, knobs, switches, buttons and sliders actually make sound. We’ll also travel back to the 1960’s and hear how synth pioneers like Bob Moog helped bring these sound making devices into the mainstream. Plus, we’ll check in with Suzanne Ciani, who has been using her synthesizer to create iconic sounds for movies, television and video games for over 50 years! All that plus a striking Mystery Sound and Moment of Um that answers the question: Do airplanes have a speed limit?Want to take a deeper dive into the world of synthesizers? Check out Francis Preve’s digital book, AudioKit Synth One: The Ultimate Guide. It’s free!Today’s episode is sponsored by Sun Basket (sunbasket.com/brainson promo code: brainson)

Jan 5, 2021 • 30min
Why is it so hard to break a habit?
If habits are really stuck, we don't think much about them -- we just do them! Some habits are good (like brushing your teeth in the morning) and others are not as good (like biting your nails). Today we find out what parts of our brains help us form habits and why it's actually super useful to not have to think so hard about everything. Gungador tries to break a bad habit, and we find out the best tips for ditching habits we want to leave behind. Plus: A brand new mystery sound and a Moment of Um that answers the question: "How do 3D glasses work?If you want to join the Brains On fan club and get a mailing of awesome temporary tattoos, have an adult sign up or update your mailing address at brainson.org/fanclubToday’s episode is sponsored by KiwiCo (kiwico.com and promo code BRAINSON) and Purple (purple.com/brainson10 and promo code BRAINSON10).

Nov 25, 2020 • 16min
Smash Boom Best: Flowers vs Rainbows
We’ll be back with new episodes in January. But we wanted to share another show with you that we’ve been working on: Smash Boom Best!It’s a debate show where we take two cool things, smash them together and let you decide which one is best. Today we’re sharing with you an excerpt from a debate featuring our very own Sanden Totten: Flowers vs RainbowsSanden is repping team flowers and our good friend Joy Dolo, host of Forever Ago, is arguing for team rainbows.To hear the rest of the debate, find Smash Boom Best wherever you listen to podcasts. There are over 30 debates ready for your binge listening this holiday season! Play along at home by yourself -- or with your family! You can find score sheets and other fun stuff at smashboom.org

Oct 27, 2020 • 33min
Bones from the inside out
Bones! They’re spooky. They’re creepy. They’re utterly fascinating!This episode we dig up the science behind skeletons. We’ll look at how our bones grow, what happens when we break a bone and why bones last so long. Plus, we’ll meet a talking skeleton who will help us bone up on bone trivia!And we have a mystery sound to tickle your auditory ossicles and a Moment of Um that answers the question: Why does time fly when you're having fun?We’re taking a break after this episode and will be back with new episodes on Jan. 5th. Until then, we’d love for you to go check out our sister show Smash Boom Best (smashboom.org). We’re also going to be doing a live virtual hangout in November where you can ask Molly, Marc, Sanden and Menaka all your questions. Anything you want to ask, we’ll answer! If you want to join us, the first step is to sign up for our totally free fan club (brainson.org/fans). In November we’ll send an email out to the fan club with more details about this free, virtual hang out. So keep an eye out for that!This episode is sponsored by KiwiCo (kiwico.com/brainson), Ancestry (ancestry.com/brainson), Purple (purple.com/brainson10), Guardian Bikes (guardianbikes.com/brains), and Pillsbury Grands Cinnamon Rolls (pillsbury.com/products/cinnamon-rolls). You can support the show and help us keep making new episodes at brainson.org/donate

Oct 20, 2020 • 37min
Why do siblings annoy each other?
Having a sibling is a special thing -- but, wow, can they be annoying! In this episode we’ll look at why our brothers and sisters are so good at pushing our buttons. Plus, is there any truth to the idea that oldest kids are the most mature and the youngest ones are the most charming? We’ll look at the science of personality and birth order. We also visit a sibling drive-thru, get quizzed about animal relationships and answer this question in our Moment of Um: why does rain come in small droplets?This episode is sponsored by:KiwiCo (https://kiwico.com/brainson)Ancestry (https://ancestry.com/brainson)White Hat Jr. (https://www.whitehatjr.com/)General Mills Pillsbury (https://www.pillsbury.com/products/cinnamon-rolls)If you want to find out more about how to stop bullying, please go to Stop Bullying Speak Up: http://includesomeone.com/

Oct 13, 2020 • 33min
How do flu vaccines work?
The flu shot changes every year. But why is the flu special, if other illnesses have much longer-lasting vaccines? This episode takes us into the world of viruses and immunity.We released this episode about flu vaccines last year but we wanted to share it with you again since it’s flu vaccine season but also because vaccines are in the news a lot lately. Scientists are testing a bunch of vaccines for the new coronavirus right now. This episode gets into the details of how vaccines work and how they’re made.A friendly lymphocyte fills us in on how flu shots work, and science journalist Anna Rothschild shares how vaccines started around the world. We'll hear from some virus-busting detectives to see how scientists solve the case of how to make next year’s flu shot as effective as possible. Author Maryn McKenna will stop by and drop some flu knowledge, too!Get your ears ready for a good, thumping mystery sound, and a new Moment of Um: how do straws work?This episode is sponsored by KiwiCo (KiwiCo.com/brainson), Pillsbury Grands Cinnamon Rolls, Guardian Bikes (GuardianBikes.com/brains) and Varsity Tutors (VarsityTutors.com/brainson). You can support the show at brainson.org/donate