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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.

Brains On! Science podcast for kids

Baleen whales sing. Toothed whales click. But how and why do they make these musical sounds?

Join Molly and co-host Tyler as they dive into the wonderful world of whale sounds. First, they run into Anna Goldfield on her way to audition for a whale choir. She teaches them about the voice boxes of baleen whales. Then, biologist Shane Gero talks about sperm whale communication, and how humans are only just beginning to understand the complexity of the sounds they make. All that, plus a whale of a mystery sound!

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Are whales communicating with their clicks and songs?

In this episode, we ask: Why do some foods taste better to adults than kids? And what happens to food once you’re done tasting it?

Eating!

Among the questions answered in this episode: Is it better to be taller or shorter? Do animals grow the same way that humans do? What superpowers does your brain have before it’s done growing?

Growing!

The questions asked and answered in this episode include: What is harmony exactly? What does it take to be a great rapper? How does sound travel?

Music!

We have some questions about sleep: It’s ok to stay up late, right? Is it possible to control your dreams? Do all animals sleep? Why do we need to sleep anyway?

Sleeping!

If you look a little closer, listen a little harder, you’ll notice the secret life of things all around you. Want to know about the secret lives of bees, crickets, coral — and your own backyard? Give a listen!

Secrets!

The questions we have about numbers are uncountable. But here are a few of them: Where does zero come from? How is there more than one kind of infinity? What is it like to do math when numbers have different colors — and personalities?

Numbers!

It’s easy to take water for granted. After all, you just turn a faucet and it pours right out. But how does it get to our faucet? We’ll explore the water cycle from rain to your drain. And did you know that space is full of water? It’s one of the most common features of the universe. We’ll also look at all the important things our bodies do with water — and how that’s a cycle too. Caution: this episode may make you very thirsty.

Water, water everywhere - but how does it get there?

Monarch butterflies are unique — they’re the only butterfly to travel thousands of miles when the seasons change. They travel from as far north as Canada all the way down to a few very specific mountaintops in central Mexico.

They don’t have a car, or an airplane ticket. They just have their two little wings. So we’re asking: How do they do it? How do they migrate thousands of miles? And why?

How do monarch butterflies travel so far?

Gravity is a very familiar force to us here on Earth. We know how it behaves and how it affects us. But where does it come from? We’ll also talk to a NASA astronaut about what it’s like to experience micro-gravity.

The mystery of gravity

After a caterpillar goes into its chrysalis, you would expect a beautiful butterfly to emerge. But when this parasitoid attacks, the results are very different.

When parasitoids attack!

When parasitoids attack!

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