The five lessons

Lesson 1

What’s a volcano? (No, you probably don’t know the answer.)

Along the way to the answer, you’ll learn what makes the types of volcanos different, what makes them the same, and what geologists actually study.

(You’ll also learn an incredibly simple way to tell the secret backstory of every igneous rock, just by looking at it for a second. Later, we’ll expand this to every rock, and you’ll be able to do what professional geologists do. It’ll be epic.)

This is a free preview.


Lesson 2

Where does lava come from?

This is the forty-seventh lesson of our Big Course. Along the way to the answer, you’ll learn what the layers of the Earth actually are, the strange, strange thing that happened when the Earth was just born, and why you should be careful with a word everyone uses.

(You’ll also swell up to Megaworld, and learn the deep logic of metric prefixes.)


Lesson 3

Why is lava hot?

This is the forty-eighth lesson of our Big Course. Along the way to the answer, you’ll learn about the type of lava that you never see in pictures, the discovery of Periodic Table, the weird things lurking in the mantle, and how the Earth was born.


Lesson 4

What’s the “Ring of Fire”?

This is the forty-ninth lesson of our Big Course. Along the way to the answer, you’ll hear the tale of how “tectonic plates” were discovered, learn to see the whole confusing system of volcanos, earthquakes, and continents as a simple, terrifying story, and discover the actual biggest volcano in the world… which no one ever talks about!


Lesson 5

What's the best thing that could come out of Yellowstone?

This is the fiftieth lesson of our Big Course. Along the way to the answer, you’ll learn about geysers & hot springs, and what's really under the ground in America's most famous national park. You'll also learn where our electricity comes from, whether that's good or bad, and one crazy idea as to what we might do about it.


Secret Sixth

Should we erupt volcanos?

This is one of those off-the-books "Secret Sixth" lessons; specifically, the one for "Volcanos". Along the way to the answer, you'll learn a weird chapter in the story of climate change, hear a way some people want to imitate volcanos, and understand something that science can NEVER tell us.