
Brains On! Science podcast for kids
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.
Latest episodes

4 snips
Mar 11, 2025 • 32min
Trends: How do they start?
Sanden Totten, an expert on the Diffusion of Innovation Theory, joins the discussion to unravel how trends begin and spread. He explains the role of early adopters and their influence on social phenomena, likening them to social media influencers. The hosts add humor with quirky ideas like 'fruit pants' while exploring how trends in animal behavior parallel human fads. Personal anecdotes and listener contributions highlight the playful nature of trendsetting, making it clear that trends shape connections and identities across cultures.

Mar 7, 2025 • 2min
Smarty Pass Sneak Peek: Molly’s Inconceivable Preposterous Skateboard
Oh no! Molly’s been bequeathed her great-great grandfather’s skateboard, which unfortunately contains the spirit of dictionary editor Rutherford Williams Webster! Hoping to defeat the skateboard poltergeist, Anna and Marc must attempt to spell and define Webster’s most obscure words!

Mar 4, 2025 • 28min
How does solar power work?
Brains On is a non-profit public radio program. There are lots of ways to support the show:Support the podcast with donation | Subscribe to Smarty Pass for ad-free episodes and bonus content | Buy our book and merch | Come to our live showsSolar panels capture energy from the sun and turn it into electricity. But how do they work?Join guest host Rosie duPont and co-host Anna as they explore the ins and outs of solar energy! Marc and his latest invention, Sal the solar bot, stop by the studio for a special solar demonstration — then the Earth and Moon chat about why solar power is an important tool for slowing down climate change. Plus, an electrifying new mystery sound!Check out our series all about electricity too!Today’s episode is sponsored by: Indeed.com/brainson - Receive a $75 sponsored job creditExperience Disney's Snow White, only in theaters March 21. Rated PG, parental guidance suggested.

Feb 25, 2025 • 26min
What is asthma?
Dive into the world of asthma with an engaging exploration of how our lungs function. Discover why asthma attacks occur and hear firsthand experiences that highlight the challenges faced. Learn from a kids' lung doctor about the role of rescue inhalers and the factors contributing to asthma. Plus, enjoy a fun segment where listeners guess a mystery sound and share their favorite dinosaurs. It's a captivating mix of science and personal stories, perfect for curious minds!

Feb 18, 2025 • 35min
How does coral communicate?
Dive into the mesmerizing world of coral, where vibrant colors and unique shapes reveal its true nature as an animal! Discover how these oceanic wonders communicate and even hear sounds—who knew coral could rock out? Enjoy playful banter and personal stories from the hosts about the importance of coral reefs and their role in marine ecosystems. Plus, unravel the mystery of a delightful sound that brings joy to young listeners. This underwater adventure is all about creativity, engagement, and celebrating nature!

Feb 11, 2025 • 33min
Why do we have crushes?
Dive into the world of crushes and love, exploring the science behind our feelings. Learn why crushes make us feel nervous and excited, and how our brain determines who we crush on. Discover the complexities of relationships and navigate tricky parts of having a crush. Stick around for a fun game show and learn about the behavior of water droplets in the atmosphere.

Feb 7, 2025 • 2min
Smarty Pass Sneak Peek: Smarty Pass Deli
Join a hilarious lunch rush at a whimsical deli featuring quirky animal customers! The delivery person faces amusing challenges while sorting out zany orders. Expect playful banter and interactive games that keep everyone entertained. Plus, uncover exclusive content with a special subscription! This delightful chaos will have you laughing and learning about the animal kingdom.

Feb 4, 2025 • 28min
Why does salt make food taste so good?
Priya Krishna, a food journalist and cookbook author, joins the hosts to discuss the captivating science of salt. They explore how salt enhances flavors, comparing culinary traditions from Japan to Canada. The trio dives into personal salt preferences and its essential role in cooking, even touching on the playful relationship between salt and sugar. Engaging listeners with a fun sound guessing game and community involvement, the conversation flows with creativity and excitement, making salt not just a seasoning but a source of inspiration.

7 snips
Jan 28, 2025 • 26min
Why is Jupiter called Earth’s bodyguard?
Join Star E. Knight, host of Pop Planet, as she interviews the colossal planet Jupiter, often dubbed Earth’s cosmic bodyguard. They discuss Jupiter's immense size and its crucial role in protecting Earth from asteroids and comets. With humor and delightful metaphors, the conversation unveils how Jupiter's gravity acts like a superhero, saving our planet from potentially catastrophic impacts. Plus, partake in a fun mystery sound challenge that sparks creativity among young listeners!

Jan 21, 2025 • 27min
What is Down syndrome?
You may have heard of Down syndrome, but what is it exactly? In this episode, we'll break down the science of chromosomes and how having an extra one leads to this fairly common condition. Plus, we'll learn some tips for making friends with someone who might seem different than you. We'll also swing by a farm staffed by ranchers with Down syndrome. And in our Moment of Um we'll find out why eggs go from clear to white when cooked.
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