Moment Of Um

Brains On Universe
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Feb 24, 2025 • 6min

What is silica gel and why shouldn’t you eat it?

Have you ever gotten a new toy or pair of sneakers and noticed there’s a little white paper packet inside the box filled with tiny clear balls? It’s called silica gel. But what is this stuff? And why are the little packets labeled “Do not eat?” We asked science professor Mark Lorch to help us find the answer.Got a question that’s left you high and dry? Send it to us at BrainsOn.org/contact, and we’ll offer up a fresh answer!See omnystudio.com/listener for privacy information.
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Feb 21, 2025 • 7min

How can mold be used for medicine?

Scientists develop medicines to help fight disease and keep people healthy. Some medicines are made in a lab, some come from plants, and some…even come from mold! So how does that work? We asked microbiologist Christine Salomon to help us find the answer.Got a question that totally breaks the mold? Send it to us at BrainsOn.org/contact, and we’ll send you our most cultured answer.See omnystudio.com/listener for privacy information.
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Feb 20, 2025 • 4min

Why do our ears pop on airplanes?

Have you ever been on an airplane and noticed that pressure in your ears? And then, as you’re taking off…they pop! Just like a balloon or a bubble or a freshly opened can of dough! Why does that happen? We asked infectious disease physician Dr. Frank Rhame to help us find the answer.Got a question that popped in your head? Send it to us at BrainsOn.org/contact, and we’ll fly in to help answer it for you.See omnystudio.com/listener for privacy information.
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Feb 19, 2025 • 6min

Why does the bowl get hotter than the food in the microwave?

If you’ve ever grabbed a flaming hot bowl of soup out of the microwave and then slurped a spoonful of icy liquid from the middle of it, you’re not alone. In fact, it feels like one of life’s great mysteries! Why does this happen to food in the microwave? We asked ceramic artist Matthew Katz to help us find the answer.Got a scalding hot question? Send it to us at BrainsOn.org/contact, and we’ll bowl you over with the answer. See omnystudio.com/listener for privacy information.
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Feb 18, 2025 • 5min

How do frogs' tongues stretch so far?

Ever wish you had a frog's tongue? You wouldn’t even have to pick up a cookie with your hand…your tongue would grab it for you! How amazing is that? But really, how DO frog tongues stretch so far? We asked Kiisa Nishikawa, a professor at Northern Arizona University, to help us find the answer.Got a sticky question? Send it to us at BrainsOn.org/contact, and we’ll slurp up an answer for you!See omnystudio.com/listener for privacy information.
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Feb 17, 2025 • 8min

When did people start wearing makeup?

Colored eyeshadow, glossy lipstick, rosy blush – people use all sorts of makeup to change how they look. But when did we start using makeup? And how has it changed over time? We asked archaeologist and Brains On producer Anna Goldfield to help us find the answer.Got a question that’s making you blush? Send it to us at BrainsOn.org/contact, and we’ll help you face the answer!See omnystudio.com/listener for privacy information.
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Feb 14, 2025 • 7min

How do minerals form in caves?

Caves are full of amazing stuff: bats, hidden passageways and of course – spectacular rock formations! So where do these rock structures come from? We asked geologist Hazel Barton to help us find the answer.Got a rock-solid question?Send it to us at BrainsOn.org/contact, and we’ll help find the answer under the surface.See omnystudio.com/listener for privacy information.
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Feb 13, 2025 • 4min

How do sticks make fire?

People rubbing two sticks together and a fire magically appearing is a common thing you might see in movies or on television. But does it actually work? We asked engineer Vi Rapp to help us find the answer.Got a question that’s flickering in your brain? Send it to us at BrainsOn.org/contact, and we’ll help put out the fire.See omnystudio.com/listener for privacy information.
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Feb 12, 2025 • 6min

How do green screens work?

Movies can take us to extraordinary places, sometimes using technology! Filmmakers create new worlds, incredible creatures, and mind-bending action scenes using something called a green screen. A green screen is just what it sounds like: a bright lime green background used to create special effects! So how does a green screen make movie magic? We asked movie-maker and film professor Jeremy Royce to help us find the answer.Got a question playing in the theater of your mind? Direct it to us at BrainsOn.org/contact, and we’ll help screen out the answer. See omnystudio.com/listener for privacy information.
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Feb 11, 2025 • 6min

Do babies understand words?

Babies. They’re cute little peanuts, huh? Babbling and drooling while their parents talk to them in widdle baby voices. But do babies understand what people say to them? When do they start learning how to communicate with language? We asked child psychologist Dr. Beverly Goldfield to help us find the right words to explain the answer. Got a question that’s really verbing your noun? Send it to us at BrainsOn.org/contact, and we’ll help you find an adjective answer.See omnystudio.com/listener for privacy information.

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