Knock knock! Everybody loves a good joke, but how did they start? And why do we think they’re so funny? We asked Brains On producer and resident funny expert Anna Goldfield to give us the lowdown on jokes! 

Got a question that’s tickling your curiosity? Send it to us at BrainsOn.org/contact, and we’ll get to the punchline.

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It’s one thing to watch a storm roll in from the safety of your own home, but what if you’re out in the middle of the ocean and things start to head in a stormy direction? Jonathan Smith, a faculty research assistant at University of Maryland, will help us understand what happens when lightning strikes water.

Do you have a strikingly good Moment of Um question for us? Send it to us at BrainsOn.org/contact, and we’ll help spark an answer!

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Bread is the best. But you know what makes bread even better? Toasting it. That brown crunchy exterior with the springy chewy center can’t be beat. But how does a toaster transform bread into toast? We asked food scientist David Dominguez to help us find the answer.

Got a question that’s bready to be answered? Send it to us at BrainsOn.org/contact, and we’d loaf to find you an answer!

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Worms! Some of us love them - some of us are terrified of them! But have you ever wondered how they get their rest? Physicist Daniel Gonzales is the expert on all things worms and sleep and he’s here to fill us in. 

Got a Moment of Um question for us that’s been slithering around your brain? Send it to us at BrainsOn.org/contact, and we’ll help you find the answer.

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Human beings have told stories and made art about the sun and the moon for as long as we’ve existed!  Both of them were in the sky long before humans evolved.  But just how old are they?  And is the sun or the moon older?  We asked astrophysicist Amanda Farah to help us find the answer.

Got a question that’s sunsationally difficult? Send it to us at BrainsOn.org/contact, and we’ll comMOONicate the answer to you

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Parrots are one of the few animals in the world that can mimic human speech and other sounds. But how exactly do they do it? We asked bird expert Amanda Bender to help us find the answer.

Got a question that’s a real squawk in the park? Send it to us at BrainsOn.org/contact, and we’ll help find an answer that’s macaw-some!

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One of the best things about looking up at the night sky is gazing at our big, beautiful moon. But why do we get to have all the fun? Can a moon have its own moon? Harvard graduate student Chantanelle Nava helps us understand. 

Do you have a Moment of Um question for us that’s totally far out? Send it to us at BrainsOn.org/contact, and we’ll help you find the answer.

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Ants, they’re just like us. They like picnics, hills, and sweet things! But if ants like sweets so much, do you think they ever attack beehives? We asked bee researcher Dr. Alina Nino to help us find the answer.

Got a question that’s buzzing around your head? Send it to us at BrainsOn.org/contact, and we’ll help ant-swer it. 

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If you’ve ever hugged a tree (and we hope you have!) you’ll know that the outside of a tree can be bumpy, prickly, and can even scrape your skin. That’s because trees are covered in tree armor – otherwise known as bark. One of our listeners wanted to know what tree bark is made of, so we asked forest ecologist Diana Macias to explain.

Do you have an evergreen question for Moment of Um? Leaf it for us at BrainsOn.org/contact, and we’ll try to find the answer.

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Vacuums are like magic. You press a button and POOF – they can suck up all kinds of stuff: crumbs, cat fur, even coconut shrimp. But how do these handy dandy machines work? We asked mechanical engineer Tiffani Teachey to help us find the answer.

Got a question, but you’re not sure Hoover answer it? Send it to us at BrainsOn.org/contact, and we’ll find an answer that sweeps you off your feet!

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