Episódios

  • How does soap work?

    How does soap work?
    Apr 28 2026
    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.
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    34 minutos
  • How to build a house on the moon

    How to build a house on the moon
    Apr 21 2026
    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
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    32 minutos
  • More sport science: Bats and black eyes

    More sport science: Bats and black eyes
    Apr 14 2026
    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.
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    28 minutos
  • Sport science: softballs, baseballs, and curve balls

    Sport science: softballs, baseballs, and curve balls
    Apr 7 2026
    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.
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    30 minutos
  • Is there such a thing as a blue raspberry? And why are raspberries hairy?

    Is there such a thing as a blue raspberry? And why are raspberries hairy?
    Mar 31 2026
    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.
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    29 minutos
  • Hoax Hunters: What is the Bermuda Triangle

    Hoax Hunters: What is the Bermuda Triangle
    Mar 24 2026
    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.
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    30 minutos
  • How do flowers get their smells?

    How do flowers get their smells?
    Mar 17 2026
    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.
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    27 minutos
  • It's time for the....Mystery Sound Extravaganza!

    It's time for the....Mystery Sound Extravaganza!
    Mar 10 2026
    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.
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    37 minutos