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 Lindholm.

Each episode we tackle a question from a curious kid and we help find an interesting person

to offer an answer. And you can send us your question by having an adult record it on

a smartphone and then send the file to questions at But Why Kids.org. This podcast has only

been around for a couple of months and we've already gotten questions from at least 20

days and from kids who live in Switzerland, Mozambique, Australia, Israel and India. All

of your questions are awesome. We wish we could get to them all. But in this episode,

we're going to tackle a question from 7-year-old Sawyer in Heinsburg, Vermont.

Thanks for the question, Sawyer. We know a good person to offer an answer.

Pretty complicated to explain it without actually showing, but I can do my best and I hope

that will be sufficient. My name is Ashley Bellrose. Ashley teaches at a local technical

center here in Vermont where our podcast is based. One of the things she teaches high school

students is how to use a chainsaw. It's part of a forestry management course and Ashley

says if you're going to learn how to use a chainsaw, it's pretty useful to know how to

trouble shoot a chainsaw if it's giving you some problems. So we enlisted her help in

describing how an engine works. An engine is basically a series of controlled explosions.

...