This is Planet Money from NPR.

Hey everybody, we made it!

This is the sixth and final episode of Planet Money Summer School this year.

The graduation episode, by the end of this class, you will be ready to ace the final exam,

which we have now posted online at the Summer School homepage.

And you'll get to graduate with your diploma, which is a real thing.

You'll get an actual diploma.

I mean, it's not real like it'll get you a sweet job at a bank reel,

but it's real enough to print out, maybe frame it, hang it up on your wall,

take a selfie with it for your online dating profile, whatever you want.

But, before we get to that, we do have one final investment lesson to share with you.

And it's all about what you need to know if you're thinking about investing in cryptocurrencies.

Crypto has become impossible to ignore, not just because of the hype it gets,

but also because the total value of cryptocurrencies has shot up in the last few years,

and more and more people are now investing in them.

But if you're thinking about investing in crypto, do you know exactly what it is that you'll be buying?

And how it should fit alongside the rest of your investments, if at all.

We are going to start answering those questions by listening to an excerpt of a classic planet money episode

about Bitcoin, the biggest cryptocurrency in the world.

And after that, our summer school professors will have some context to add.

This planet money episode first aired in January of 2018, and it was hosted by Kenny Malone.

One day around Thanksgiving of this year,

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