The Mysteries About True History's podcast is back for season two.

If you're a kid who would love to travel through time to solve cool mysteries,

perplexing puzzles, and tricky riddles,

then this podcast is the perfect audio treat for you.

Every week, join me, Molly, and my best friend Max,

as we take our problem-solving skills to amazing places like ancient Egypt,

ancient Greece, or the Galapagos Islands in 1875 to help out the one and only Charles Darwin.

We never know where we're going to wind up or what we're going to find, which is all part of the fun.

So put on your time traveling shoes and listen as a family.

You can listen to mysteries about true histories on Apple Podcasts, Spotify, or wherever you listen to podcasts.

Hello, Who Smarted Plus Subscribers? Welcome to the latest edition of Smarty Q's.

We begin with a question from Smarty fan, London in Vacaville, California, who asks,

What is Air Made of?

And secondly, what creates wind?

Those are great questions, London.

The answers, you might say, are blowing in the wind.

But seriously, air is made up of molecules, by volume, around 78% nitrogen, 21% oxygen, between 1% to 4% water vapor, and certain trace elements.

These molecules are constantly zooming around, bumping into themselves and other objects like us.

The more concentrated the molecules become, the more air pressure they create.

This pressure is governed by the pressure gradient force,

which causes air in a high-pressure area where molecules collide more rapidly

to rush to low-pressure areas where there is more room to breeze. Get it? Air rushing from high to

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