But why? A podcast for curious kids is known for serious answers to silly questions sent

in by kids just like you. But did you know that but why is now a book series?

Our first book, Our Lama's Ticklish, answers questions from real kids about farm animals.

This colorfully illustrated book is perfect for kids ages 8 to 10. And our second book,

To Fish Breathe Underwater, explores the underwater world of the ocean. Learn more at

at thebykids.org slash books.

This is But Why, a podcast for curious kids from Vermont Public Radio. I'm Jane Lindtow.

On this show we take your questions on anything from science to art to history to ethics.

And we find interesting people to help answer them. Sometimes we answer them ourselves.

And sometimes we get to go on field trips to answer your questions. That's my favorite.

I'll tell you how to ask your own question at the end of the episode. I am actually outside right now.

And I am not going to stay outside for very long. I am in Montreal in Canada. And it is minus 5 degrees out.

That's Fahrenheit. If you live here in Canada, you'd say it's minus 20 Celsius. I am freezing. My toes are froze.

This is the kind of weather that freezes the little hairs inside your nostrils.

So I'm going to go inside. But that's perfect because that's where we need to go to answer today's question.

My name is Wyatt and I live in Los Angeles. And I am 5 years old and I want to know if there's underground cities.

Are there underground cities? Well, it just so happens. I am standing outside a sign that says Rezo,

which in Montreal, represents the underground city. Let's go in.

Okay, I am now inside the McGill metro station. But this is more than a subway or a tube stop.

This is part of the underground city here in Montreal.

The underground city was started in the 1960s. And what it is is a network of underground tunnels.

And there are malls and hotels and places you can shop and eat.

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