Stuff You Should Know

Whistling is pretty cool when you think about it because it can mean many things, from simple happy tunes to legit communication. Learn all about this ubiquitous skill today. See omnystudio.com/listener for privacy information.

Long before slide rulers and pocket protectors, civilizations across the world used their noggins to build some impressive structures. Almost all have crumbled to ruins over the millennium, but thanks to the earliest tourists, we admire them still today. Explore some of them with Josh and Chuck in this classic episode.See omnystudio.com/listener for privacy information.

Wikipedia changed the world. Before it came along, you had to go to the library to get the answers you sought. And you and your friends had to just agree to disagree on facts. And as the internet grew and commercialized, Wikipedia remains free and open.See omnystudio.com/listener for privacy information.

Those armrests in the middle of benches aren’t just for your comfort, they’re intended to keep the homeless from laying on them. Cities are filled with these mean-spirited inconveniences. But who’s to say how a person should use a bench?See omnystudio.com/listener for privacy information.

In almost every part of the world, in some form or fashion, widows have things harder than they did when their spouses were alive. In some places it means they pay higher taxes, in others it means they’re ostracized to live on the margins of society.See omnystudio.com/listener for privacy information.

About 5,300 years ago a Copper Age shepherd was murdered. He just happened to die in a place where his body was so well preserved that gave researchers an actual shot at determining the course of his final day on Earth. Josh and Chuck take you through their reconstruction in this classic episode.See omnystudio.com/listener for privacy information.

Today we take to the friendly skies to detail the fascinating history of air travel. From planes with piano bars and lounges to the current no frills varieties. See omnystudio.com/listener for privacy information.

The peace sign is one of the most globally recognized symbols around today, but it’s only a few decades old. And it wasn’t the hippies who created it, it was a group of Brits dedicated to nuclear disarmament in the 50s.See omnystudio.com/listener for privacy information.

When we think of an abused spouse we tend to think of horrific physical or emotional violence. But over the last decade or so, it’s become clear that’s only a symptom – that domestic abuse is in fact an all-consuming form of interpersonal terrorism. See omnystudio.com/listener for privacy information.

It's pretty obvious something's gone wrong when you get a sunburn, but did you know a tan means you've damaged your DNA? Dive into the three Ss of summer and learn all about how to protect yourself from the sun.See omnystudio.com/listener for privacy information.

In the last decade American schools became enrapt by a new psychological concept centered on persevering. Things went south when they started attaching funding to it.See omnystudio.com/listener for privacy information.

Learn all about the saddest phone notification in today's episode. See omnystudio.com/listener for privacy information.

You've probably been to a symphony performance and wondered, what in the heck are conductors doing up there anyway? Well we're here to explain that as best we can.See omnystudio.com/listener for privacy information.

Think tanks? More like stink tanks! We're kidding. Think tanks do valuable work, when they operate in a non-partisan way of course. Learn all about the history of these heady institutions in this classic episode.See omnystudio.com/listener for privacy information.

If you grew up in the 70s and 80s in America, you probably have the image of your tattered Guinness Book of Records. The book was ubiquitous then, but is still thriving today in despite the internet. See omnystudio.com/listener for privacy information.

Mudlarking is a uniquely British hobby, though you can dig through river mud anywhere there's a river. But the Thames has the good stuff. See omnystudio.com/listener for privacy information.

Unit 731 was a secret group within the Japanese Army in WWII that committed unspeakable atrocities against humans in the name of scientific research. Listen with caution. See omnystudio.com/listener for privacy information.

No one - no one - likes to vomit, but there are some people who would prefer to die rather than vomit, people who spend their days worrying they will vomit at any moment and become so obsessed they curtail their lives to prevent it from happening. Learn all about it with Josh and Chuck in this classic episode.See omnystudio.com/listener for privacy information.

In the exciting conclusion of our two-part episode on Hoover, we come in at the Cold War and end on a strange note.See omnystudio.com/listener for privacy information.

By definition hobos are people who travel from town to town taking odd jobs as they go. But some towns are friendlier than others, and hobos developed a system of symbols they left one another to know what to expect from a town.See omnystudio.com/listener for privacy information.

It wouldn’t be an overstatement to say that J. Edgar Hoover was perhaps the most powerful American of the 20th century. By the time he established the FBI as America’s police force, presidents were afraid of him. Just exactly how did he get to be so puissant?See omnystudio.com/listener for privacy information.

On Halloween 1938 young radio star Orson Welles scared the pants off of America with a fictional news bulletin claiming Martians had landed and were destroying the country. People across the nation ran wild with panic in the streets – or did they? Listen to this classic episode to find out.See omnystudio.com/listener for privacy information.

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?See omnystudio.com/listener for privacy information.

Even the dullest hockey game is worth seeing when the Zamboni comes out to resurface the ice.See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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!See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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. See omnystudio.com/listener for privacy information.

Getting the wind knocked out of you is scary, but passes quickly. Learn exactly what's happening with all that today.See omnystudio.com/listener for privacy information.

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. See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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. See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

Today we go down the road a bit, thumbs out, to explore the rich history of hitchhiking. See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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!See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

Straitjackets aren't really a thing anymore unless you're watching a movie or TV show. Or in prison. That's the sad truth.See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.

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?See omnystudio.com/listener for privacy information.

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.See omnystudio.com/listener for privacy information.