Stuff You Should Know

The idea that we aren’t the first advanced civilization to live on Earth sounds like a fringe theory, but it raises a good question: How can we be so sure that a civilization didn’t arise and die on Earth so long ago that any trace of it has been erased?

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Even the dullest hockey game is worth seeing when the Zamboni comes out to resurface the ice.

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Taking care of 12,000 tons of residential trash every day is a hard job. But how does that even work? Listen in to marvel at the NYC sanitation system.

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Despite as much as one percent of the adult population having the condition, science doesn't actually know how stuttering works. The best it's come up with so far: there seems to be an issue between the physical process of speaking and the thought process that underlies it. Find out what science means by this in this classic episode.

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Sometimes you just have to turn it off for a while – all the thinking, and overthinking, analyzing, and figuring out. Sometimes it’s nice to just breathe through your mouth and talk about dumb things criminals do for an episode.

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We all know the story of the Titanic and the tragedy of lives lost. So hey, let's talk about the survivors for a change!

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Misophonia is a condition in which certain sounds trigger people in very negative ways that can really disrupt someone's life. Listen in today to learn all about this fairly recently recognized condition.

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As if being murdering SOBs weren’t enough, the Nazis were also thieving rats. During WWII, they stole billons in gold from countries they overran and moved it to Germany. But at the end of the war, only part of it was recovered. Where’s the rest? Find out the extent of our knowledge in this classic episode.

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The only thing more complicated than an atomic clock is researching how they work and then figuring out how to explain it to other people. But believe us, they are fascinating. Even if you don’t care about clocks or atoms you’ll still like this episode.   

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Getting the wind knocked out of you is scary, but passes quickly. Learn exactly what's happening with all that today.

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The Village People were a smash hit singing group that came and went in under two years. Then other people performed under that name for several decades. This is their story. 

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If you've ever been to an international airport, you've probably seen one of the keenest spotters of illegal contraband - The Beagle Brigade! These cute dogs aren't after drugs or bombs, they're carefully trained to sniff out agricultural products. Learn all about this furry group of crime stoppers in this classic episode.

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Georgia Tann was a bad human. We feel safe in saying that because she kidnapped babies from poor families to sell to wealthy ones. Listen in if you can stomach it.

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Not too much is known about Margaret Schilling. She was the kind of person whose memory might have been lost to time had she not left behind an indelible reminder of her. 

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You probably know wind energy projects have been around since the 90s, but did you know they now provide 10% of America’s energy, and more than that in other countries? Learn about what’s ahead for wind and what it’ll need to become a real star like coal.

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Special effects have been around since the first movies. In fact, the techniques the earliest filmmakers created are still around today, we just use computers to do them faster and cheaper. Hit play on this classic episode and then put on your beret and get ready for SYSK film class.

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Today we go down the road a bit, thumbs out, to explore the rich history of hitchhiking. 

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Few people have been more qualified to survive a plane crash alone in the Amazon for almost two weeks than Juliane Koepcke. Let’s hear her story.

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Arson investigation has changed a lot over the years. There is actual science available now, but the word still hasn't totally gotten out. Listen in today, and don't play with matches!

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It's common knowledge that famines are usually caused by major droughts: Rain doesn't fall, crops don't grow, and people go hungry. But recent research suggests that while weather may trigger famines, they may actually be more of a human-made catastrophe. Find out more in this classic episode.

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We think of estrogen and testosterone as the female and male sex hormones and they may seem kind of gross (is that just Josh?), but that simple understanding is way off. A magical biochemical dance between the two creates everything from bones to moods.

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Straitjackets aren't really a thing anymore unless you're watching a movie or TV show. Or in prison. That's the sad truth.

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The 70s were the decade of the woman in the US. America finally was coming around to the understanding women and men are equals and the government sponsored a conference to advance women’s rights. The opposition that arose changed the fabric of America.

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When Fort Knox was built in the 1930s to house America’s gold supply, it was billed as an impenetrable, impregnable, don’t-even-think-of-trying vault. But as the world has moved further away from gold, the stockpile’s lost a bit of its luster. Learn all about it in this classic episode.

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One of America’s most important ecosystems takes up more than half the state of Florida. It’s a river of grass, a cactus desert, and a saltwater bay all rolled into one. And there are alligators and crocodiles. And that’s just the beginning.

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What's the deal with knocking on wood? It's an action one takes to ensure good luck. Which doesn't exist. Yet we do it. Humans are funny that way.

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One of the things we rely on is for the companies who make the stuff we need to not stick it to us, the customer. But it’s become painfully clear that’s just what happened during the pandemic and that it’s still happening today. What can we do about it?

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In 2018, there's a man from a lost tribe still living deep in the jungles of Brazil who has been all alone since the mid 1990s. He's referred to as the Man of the Hole, and has had no face-to-face with modern humans. Who is he? We'll answer that question as best we can in this classic episode.

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It doesn't get much bigger than the Pulitzer Prize if you're a journalist. Or a novelist. Or really any kind of writer. They even give them to podcasts now. We're not holding our breath.

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The strange thing about the story of the Ramree Island Crocodile Massacre is that it didn't happen. Yet the story lives on. 

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A man with an unfulfilled vision left a huge gash in the ground near Niagara Falls. Then a chemical company came along and filled it with toxic waste. Then people came along and built homes and an elementary school on top of it. Then things went badly.

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Believe it or not, in 1985 the Philadelphia Police Department dropped a bomb from a helicopter onto a residential building in an African-American neighborhood. The fact that this story isn't more widely known says it all. Listen and learn about MOVE in this classic episode.

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Today is part II of our tribute to one of the most iconic pieces of American culture.

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Ten percent of people – in Japan at least – get the urge to poop when they visit bookstores. But it wasn’t until a courageous woman stepped up and became the voice of the phenomenon now named after her that they realized they were part of a movement.

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Today we pay tribute to one of the most iconic pieces of American culture. Listen in to hear us gush about Charlie Brown, Lucy, Snoopy and the rest of the Peanuts gang. 

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For a learning disability that everyone seems to know about, dyslexia is maybe the most commonly misunderstood and controversial cognitive difficulty there is. Some people think it’s a gift, some people think it doesn’t even exist. Learn more in this classic episode.

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It started with New Hampshire couple Betty and Barney Hill, who learned under hypnosis they’d been abducted and examined by aliens in 1962. Since then, possibly millions of people in the US alone came to believe they followed in the Hills’ footsteps. Why?

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There’s an ingredient in Skittles and lots of other food that Dunkin Donuts stopped using it in their powdered donuts. Skittles said they were phasing it out too back in 2016 but still haven’t and now the lawsuits flow like The Spice.

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The most reviled, hated, despised, no-good, low down, dirty rotten architectural style of all time is actually just the most misunderstood. Learn about this unfairly treated architectural movement and why it’s awesome. Learn to love brutalism.

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Breaking up is hard to do. Your brain might even think you're getting over a cocaine addiction. Learn all about the science behind break-ups in this classic episode!

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Llamas are pretty great. They smile! They also spit and if they feel overworked will just lay down. There's a lot to admire there.

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Roly Poly bugs go by many names. They look like tiny armadillos. They're great for your garden. And they're crustaceans. Yeah, you read that right. 

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Multitasking isn't really possible, because of the way the human brain works. We know you think you're getting more done, but you're really working slower and with worse results than working sequentially. We promise. 

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The trial of Sacco and Vanzetti, two anarchists accused of murder, was one of the first "crimes of the century." But did they do it? To this day there is speculation that they did not. Learn all about this famous case in this classic episode. 

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You know all of those cords and cables and wires that we use to connect our stuff to the electrical grid so they’ll, you know, work? Imagine a day when energy flies through the air like wifi, utterly cord-free. Well, imagine no more! That day is coming!

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Smudging is the process of wafting around the smoke of burning white sage. What is it good for? Listen in and find out.

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If you grew up outside of Africa, you might know Haile Selassie’s name from reggae music - the man who ruled Ethiopia is considered a god in Jamaica. In Ethiopia opinions are more varied. 

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In 1968, Paul Erlich published The Population Bomb, predicting coming famine and mass death. Erlich's predictions didn't pan out but his ideas launched a debate still raging today. Learn all about it in this classic episode.

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David Hahn was a kid who was really into science. So much that he built a nuclear reactor in his mother's potting shed. And it worked. 

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One of the world’s cultural treasure troves were created in West Africa. But for over a century they’ve been held in museums outside of Africa. In fact, an estimated 95 percent of Africa’s cultural heritage is kept in museums overseas.

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Charles and Ray Eames were superstar designers who dreamed up some of the most iconic pieces of furniture ever made. And they did much more than that.

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Sometimes a good idea doesn’t pan out in real life. Take Buckminster Fuller’s geodesic dome: It requires less energy to heat and cool, it’s cheap, and it’s durable enough to withstand a hurricane – but it’s also godawful ugly and that was its undoing. Learn more with Josh and Chuck in this classic episode.

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Like is a very divisive word. Purists think it's like, a filler word born in the 80s that's like, destroying the English language. Turns out none of these are like, true. 

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There’s a great origin story behind snake oil salesmen, and it has to do with just one guy who singlehandedly gave it a bad name.

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There was a brief period in America’s history – after people left the farm to work in the city and before the government started regulating it – when there was a total, lawless free-for-all in the food industry. Things were bad. Really, really bad.

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The Unabomber was one of the most notorious and longest lasting cases in the history of the FBI. Just because the manifesto reads like he was a fortune teller doesn't make his actions any less deplorable. Learn all about this fascinating case in this classic episode.

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Do teachers and managers give special treatment to those who they're told have great academic or professional promise? Does this create a self-fulfilling prophecy, regardless of the truth? That's just part of the fascinating Pygmalion Effect.

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Why are all school buses the same color? Because one man made it so. This is that story. 

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Whether you know it as Clue or Cluedo, the whodunnit mystery board game is one of the best of all time. Learn all about the history behind the game’s development, and strategies on how to crush your fellow players as soundly as Chuck’s wife crushes him.

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Disgust is an odd thing. It makes sense that we would feel a sense of revulsion at the thought of putting rotten meat in our mouths – that’s pure evolution. But why would we feel the same emotion at the thought of weird sex or from hearing a racist rant? Find out more in this classic episode.

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How did the sleepy Nevada town of Las Vegas become LAS VEGAS? Well, we'll let you know over the course of about 45 minutes. 

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Wainscoting is a beloved and time-tested decorative way to spruce up your walls. But what is it anyway? Listen in to find out.

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Tune in today to listen to the story of when North Hollywood became a war zone after a brazen bank robbery. 

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We live in a time where computers can beat the best humans in the world at chess, checkers, poker and video games. But these games are really just demonstrations of how intelligent our machines are growing. They’re growing more intelligent by the hour. This classic episode features a special guest, Tech Stuff's Jonathan Strickland.

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One thing you could do is create your own language. Some people do and for lots of different reasons. LL Zamenhof created Esperanto to try to bring about world peace. It worked, but on a less-than-global scale.   

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Jumping into a cold pool after a long sauna or hot tub can be pretty great. Saunas have proven health benefits like lowering blood pressure; cold plunges are shown to reduce inflammation. Why not combine them? A bunch of safety reasons, bucko, that’s why.

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The murder of Ken McElroy comes off like a story from a cheap paperback book you’d get to read on a plane. But this is a true crime story, set in Missouri in the early 80s. And boy does it pack a punch.

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Yogurt has been touted as a health food, but is it? Maybe. If you eat it every day. We get into the rich and creamy history of this supposed miracle food in today's episode. Get an earful of the stuff in this classic episode.

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We all know what happened at Jonestown, but who was Jim Jones before the tragedy at the People's Temple?

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Back in 1994, Nederland, Colorado found out it had a resident it hadn’t accounted for.

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Dry cleaning is one of those things that we’re all familiar with but don’t actually know much about. That will hold true no more! Learn about all the ins and outs of the dry cleaning biz, some of its toxic secrets, and some spot removal tips too!

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The annals of history hold a special place for people who have carried out treachery and betrayed their own. Thousands of years later, their names are still synonymous with being a scoundrel around the world. From Marcus Brutus to Vidkun Quisling and more, in this classic episode Josh and Chuck examine some of the bigger turncoats to live -- and exonerate others.

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You’ve probably seen cranes moving elegantly in the sky, but did you know what an important role they play in their surroundings? Learn all about cranes in this episode on cranes.

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What kind of black magic goes into deciding who makes the NYT Bestseller List? Well you probably don't know the whole story unless you work there.

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Tune in today to listen to the amazing story of Colorado River guide Kenton Grua's wild 277 mile record-breaking speed run down the center of the Grand Canyon. 

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The Seuss is loose in this episode about legendary children's book author Ted Geisel. The funny thing is, he didn't ever want children of his own, and his past work was a bit problematic. Explore his entire legacy in this classic episode.

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When George W Bush and Al Gore ran against one another, most pundits predicted a tight race. Absolutely zero of them predicted the election would come down to a few hundred votes. Today, we still don’t know who won.

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The story of why blueprints were blue is more involved than you think. It involves a chemical process and the Prussian Army. Yeah you heard me right.

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Hello, friends! Join us today for our annual live show release, recorded in beautiful Nashville. On the docket? The Biosphere II Experiment!

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The nuclear waste we produce will be dangerous for a very long time. We’ve figured out how to safely store it in the earth until it’s no longer a biohazard. Now we just have to figure out how to warn humans 10,000 years in the future to stay away from it. Find out about our best ideas in this classic episode.

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It’s all fun and games to think about how backwards and misguided some things people did in the past were until you realize we’ll be “the past” one day. What do we do now that will seem primitive then and how will they be better in the future?

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Can you imagine a color so alluring that even though you know it’s toxic you’d still use it to your heart’s content? The Victorians certainly could.

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They seem gross and bothersome at first, but once you get down to ground level and get to know snails, we’ll bet you’ll grow quite fond of them. They are living in a whole world we’re largely unaware of. 

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They are dirty, harmful to your health, bad for the environment and utterly charming. Wood-burning fireplaces have been with us for centuries and, despite their many drawbacks, are sticking around. Learn more than you thought possible about the fireplace, in this classic episode.

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Happy Holidays, friends! Tune in today to listen to our annual ad-free holiday extravaganza. There will be talk of merriment and joy!

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Just three years after the lightbulb was invented a compadre of Thomas Edison thought to use them to decorate his Christmas tree. It set off a sensation that’s gotten more popular each year since.

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The world has seen a lot of weird investment bubbles in its time, but few of them rival the fever that gripped the world in the 90s after Beanie Babies took off. Let’s visit this strange chapter in toy history together.

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Long ago, in a galaxy not so far away, George Lucas allowed the Star Wars Holiday Special to be made. What happened on the night of November 17, 1978 can never be fully explained, but we make our best effort in our annual special edition of SYSK. May the force be with us all.

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There are many types of dictators, from so called "benevolent" ones to the kind who rule with an iron fist. There are also many ways they can come into power, and they don't all include violence. Learn all about dictators past and present in this classic episode.

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The Skeleton Army was a rowdy group of folks in England who battled, sometimes violently, with the Salvation Army - largely against  their efforts to keep people from drinking and having a rowdy good time. Listen in today!

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Josh loves pickles but hates cucumbers. Chuck loves cucumbers but hates pickles. WHO WILL WIN?

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The Matewan Massacre was a pivotal moment for the US mining industry and the labor movement as a whole. Learn about what happened in this sleepy West Virginia town today.

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Freedom Schools were set up in Mississippi in the heart of the Civil Rights Movement, with the aim of giving young black school children agency and a future. They remain one of the more inspiring and progressive programs in American History, yet so few know about them. We're hoping to change that. Learn all about them in this classic episode.

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On December 8th, 1980, John Lennon was shot and killed outside his apartment building in New York City, by Mark David Chapman. Music history was altered forever. Listen in to this tragic story.

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Boba tea is bubble tea. But what are the bubbles? Tapioca pearls! Listen in today to learn about the disputed history of this trendy beverage.

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J.D. Salinger was a complicated and problematic human who stopped publishing soon after creating one of the great works of literature. Listen in today to learn the good, bad and ugly sides of the man who got famous, then dropped out.

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Beavers are in fact, very busy. They're builders and solid family members, husbands and wives. Learn all about N America's largest rodent in this classic episode.

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The story of the Oxford English Dictionary is really something. From its origin to its crowd-sourced literary quotations. Dive in today to learn all about the best dictionary. 

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When you switch lanes on the highway after noticing that the lane you’re in is ending up ahead, you are literally ruining the world.

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