Stuff You Should Know

Crooked teeth have always been a thing, but it took us a long time to do something about it. Learn about the twisted history of orthodontics today!

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In December 1900 three lighthouse keepers vanished without a trace from a deserted island in Scotland. To this day no one knows exactly what happened to them. Find out all about this strange situation in this classic episode.

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Private equity is a business operation where companies are bought and run at their leanest to maximize returns for a handful of investors. It can be a lifeline for a flailing company or run it into the ground. Either way, PE firms make out like bandits.

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Why aren't there lemurs in Africa? That question created a whole theory about a lost continent. Turns out it's not true.

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In 1922, a pastor and his mistress were murdered in New Jersey. Nobody was ever convicted of the crime even though it seems clear who did it. 

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Rape kits are simple forensic evidence collection kits used when someone is sexually assaulted. But the story is deeper than this. Learn all about rape kits, the sad backlog problem, and what you can do to help, in this classic episode. 

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In part two of Heavy Metal Week Josh and Chuck break down how specialized heavy metal music has become, talk about some of the great album covers, look at how metal hits the brain, and explain the sad death of guitar great Randy Rhoads.

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Metal fans have many ways to express themselves, but none are as metal as throwing the devil horns. But who did it first?

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Some of the most talented musicians in the world play heavy metal, some of the hardest-hitting music ever made. In this episode Chuck and Josh wade into the history of the genre, and try to get to the bottom of where the name came from.

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In the absence of an official explanation of why flight MH 370 disappeared in 2014, conjecture and conspiracy theories have filled the vacuum. Find out the current state of things in this classic episode.

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In 2014, a Boeing 777 airliner disappeared. Despite two full years of searching an area of ocean covering more than 120,000 square kilometers, it has never been found. It is the only unexplained missing vessel in modern aviation history. Listen to this classic episode and find out more about what exactly happened.

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What if we could take all the trash and waste we generate every year – gigatons worth – and used it again as raw materials. What we would have is a closed circle, one where we have everything we need without taking anything else from nature. 

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Marianne Bachmeier committed a shocking act of violence in court in Germany in 1981 to avenge the murder of her young daughter. Many people understood.

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The VW Beetle is the best selling car of all time. The story behind its creation is a bit complicated though. 

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Child prodigies are unique in that they achieve adult levels of achievement, but do not typically excel in adulthood. Why? Who knows. 

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The food we eat – especially the junk food – is a highly engineered technical marvel that’s designed to make you want nothing other than more! more! more! Learn about how food scientists make that possible by hijacking our brains.

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This is not about smoking or lawsuits or lung cancer. This is about the cigarette itself, a truly unique and destructive invention.

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The Church of the SubGenius is a religion, but really a parody of religion. Learn all about this group of weirdo outsiders in this classic episode.

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