Stuff You Should Know

Blacksmiths? You got that right. Learn all about this age old occupation in this classic episode. See omnystudio.com/listener for privacy information.

In the 80s, a pair of psychologists theorized why being part of a group can change people’s thoughts and feelings, both about themselves and other people. It sounds dry, but SIT explains everything from how people justify genocide to football rivalries. See omnystudio.com/listener for privacy information.

Japanese nuclear worker Hisashi Ouchi is often called on the internet “the world’s most radioactive man.” That’s not exactly true, but it gets the point across about how severe the fatal dose of radiation he received was. See omnystudio.com/listener for privacy information.

It is to the great nation of Canada’s lasting credit that it has prized Terry Fox as one of the most beloved and admired citizens for nearly 50 years now. It’s difficult to get across how much he means to Canada. Lucky for us, his story speaks for itself. See omnystudio.com/listener for privacy information.

The 1920s were just absolutely nuts. People got into weird fads really intensely and one of the strangest of all was flagpole sitting. It’s just what it sounds like – sitting on top of a flagpole for as long as you can. One man sat above them all. Learn all about him and many of these wild fads in this classic episode. See omnystudio.com/listener for privacy information.

The break-up of the USSR was a tough one for Russia, being the jilted republic. For the entire decade after, the country plunged into a type of controlled chaos, with a rampantly corrupt kleptocracy taking the place of the toppled socialist society. See omnystudio.com/listener for privacy information.

Today we dive in to celebrate the international treasure that is Dolly Parton. Why is she nearly universally loved? Listen in to find out. See omnystudio.com/listener for privacy information.

The US has an unusual number of outbreaks of food-borne illness going on in the summer of 2026, and the star of the show is cyclospora. How does this parasite make people sick, where does it come from? You may not want to know. See omnystudio.com/listener for privacy information.

It’s rare that the downfall of an empire can be chalked up to the decisions of just one person. It’s even rarer, when the empire falls over the course of a year. That’s pretty much what happened with the Soviet Union when Mikhail Gorbachev dissolved it. See omnystudio.com/listener for privacy information.

Narcolepsy is one of those amazing rare disorders that everyone thinks they understand – people just fall asleep at random times, even in the middle of doing something. But there’s a lot more to it and – even better – we actually may be able to explain it. Josh and Chuck run it down in this classic episode. See omnystudio.com/listener for privacy information.

Rope is one of the unsung heroes of the world of inventions. Think about it. Then let us tell you about it. See omnystudio.com/listener for privacy information.

Did a shipwreck double the size of the United States? Sort of. Listen in to find out what the heck that means. See omnystudio.com/listener for privacy information.

Irony is one of those things that you know when you see it, but it’s almost impossible to define. Well, that’s not quite right – there are a ton of definitions for irony but none of them quite capture it fully. Want to know what irony is? So do we! See omnystudio.com/listener for privacy information.

Ever wanted to know more about how the Manhattan grid was made? Well this is your chance. Find out all about it in this classic episode. See omnystudio.com/listener for privacy information.

Robert Maxwell was a lot of things, publisher, mogul, spy, politician, crook. But was he murdered when he fell from his yacht? See omnystudio.com/listener for privacy information.

Did Nero play his fiddle while Rome burned during the Great Fire of 64 CE? Absolutely not. Find out how we know when Chuck and Josh bust a two thousand year-old myth. See omnystudio.com/listener for privacy information.

You've probably seen the movie, but what else do you know about this legendary crime couple? Listen in to find out. See omnystudio.com/listener for privacy information.

As the operation expands it also begins to unravel. Word starts to leak out of the illegal stuff the Reagan administration was up to, Congress and the press investigate and people start to point fingers. Spoiler alert – they all got off scot free. Find out how it all wraps up in part 2 of this classic story. See omnystudio.com/listener for privacy information.

When Ronald Reagan was president, America got involved in some deeply shady stuff, not the least of which was the Iran-Contra scandal – a convoluted operation that managed to combine an illegal covert war in Nicaragua with secretly selling arms to Iran. Learn all about it with Josh and Chuck in this classic episode. See omnystudio.com/listener for privacy information.

Although it was built atop some musical styles that came before, reggae is mostly its own thing. It evolved as local music in the Trenchtown neighborhood in Kingston, Jamaica but after Bob Marley and the Wailers came along, it became a global phenomenon. See omnystudio.com/listener for privacy information.

Once upon a time there were these things called phone books. Inside you could find the phone number and address of just about everyone in your town. Can you imagine? See omnystudio.com/listener for privacy information.

To call beans and rice a staple is to undersell the importance of beans and rice. Today we break down the ubiquity of this beloved food combo. See omnystudio.com/listener for privacy information.

No food is more all-American than peanut butter – 80 percent of homes in the country have a jar of it in the pantry right now. And while the rest of the world might find peanut butter peculiar, maybe even gross, the rest of the world is wrong. Enjoy a smooth ride through one of our top condiments in this classic episode. See omnystudio.com/listener for privacy information.

Operation Doppelganger was a Russian propaganda project discovered in 2022, a minor part of the enormous, ongoing disinformation and chaos-sewing campaign Russia spreads across the world through social media. And some of your views may have come from it. See omnystudio.com/listener for privacy information.

Get yer info on one of Australia’s great true crime cases he-re! See omnystudio.com/listener for privacy information.

Judy Blume is more than an author. She's a legend in teen literature for her frank and honest portrayals of adolescence. Today we pay tribute to her. See omnystudio.com/listener for privacy information.

Climate change is having sweeping effects on our climate and this is changing the world, not just for humans and other animals, but plants too. Will the Earth’s flora manage to find safe refuge in time? Josh and Chuck run down the odds in this classic episode. See omnystudio.com/listener for privacy information.

We all know Switzerland is neutral. But why? Listen in and you might learn something. See omnystudio.com/listener for privacy information.

Josh implored Chuck to try sardines. Did he? Listen in to find out. See omnystudio.com/listener for privacy information.

By the 1990s, cigarette makers had been hooking and killing off their customers for about a century. And they’d gotten good at both as well as covering up their harms. In 1994 they were still denying cigarettes were addictive. Then, the 50 Attorneys General of the US rode into town to take them on. See omnystudio.com/listener for privacy information.

In this classic episode, Chuck and Josh dive into the funky, cool world of the classic TV show, Sooooooooul Train. See omnystudio.com/listener for privacy information.

Would you believe that Detroit’s crack epidemic in the mid-80s was overseen by one 16 year-old white kid who supplied all the coke? No? Well, that’s not quite true, so okay. The actual story is even more nutso than that. See omnystudio.com/listener for privacy information.

Today we salute the great Don LaFontaine, aka The Voice of God in movie and TV trailers. See omnystudio.com/listener for privacy information.

Most new moms get the baby blues soon after giving birth. Postpartum depression is something much different - the symptoms are similar, but their intensity can have sweeping effects on mom, baby, and the whole family. Fortunately, it’s highly treatable but the catch is moms usually have to ask for help. See omnystudio.com/listener for privacy information.

Back when cars were a brand new thing, before people even knew they'd stick around, two men and a dog drove from San Francisco to New York. This classic episode has their story. See omnystudio.com/listener for privacy information.

Eleanor Roosevelt was something else. We can't get into it here, but just wait until you listen to this episode. See omnystudio.com/listener for privacy information.

Now that it’s been 250 years since America split from England, we figure enough time has passed that we can finally learn the difference between the UK, Great Britain, and the British Isles. See omnystudio.com/listener for privacy information.

During the Cold War all eyes were on the Space Race between the US and USSR. But there was another, overlooked race too and it went in the opposite direction. See omnystudio.com/listener for privacy information.

In this classic episode, Chuck and Josh sit and converse on the simple, elegant chopstick. See omnystudio.com/listener for privacy information.

When a 9.2 quake shoook Alaska in 1964 it was the 2nd largest earthquake ever recorded. This is that story. See omnystudio.com/listener for privacy information.

Those are three words you probably never thought you’d see together. And the true story is just as interesting as it sounds. See omnystudio.com/listener for privacy information.

When a crush of football fans killed 97 people in England in 1989, police and officials engaged in a massive cover-up to blame it on drunken fans. Today we tell that story. See omnystudio.com/listener for privacy information.

Until 2007, the largest single corporate bankruptcy was Enron, a $67 billion energy trading company. Its decline was breathtaking, and while it’s a fascinating story of corporate malfeasance and greed, it’s also about the lives of ruined workers. Learn all about it in this classic episode. See omnystudio.com/listener for privacy information.

The sort of commune of Freetown Christiania in Denmark may not be what it used to be, but it's still true to many of its original values. Learn all about this unique neighborhood today. See omnystudio.com/listener for privacy information.

Fear is different than being scared, most notably because fear is generally a negative thing and being scared can cause an enjoyable thrill. We'll get into the difference in today's episode. See omnystudio.com/listener for privacy information.

Even though curses aren’t real – and we go to great pains to make that clear – they are pretty interesting, especially ones you haven’t heard of before. So we dug deep and found some of the curses that don’t always hog the spotlight for this fun episode. See omnystudio.com/listener for privacy information.

It’s a pretty safe assumption that people have been born with birthmarks since humanity began, and between then and now we’ve come up with some wacky, even dangerous, explanations for them – even a few that survive still today. Learn all about them in this classic episode. See omnystudio.com/listener for privacy information.

Since the age of Descartes, science has put all of its eggs in the basket of determinism, the idea that with accurate enough measurements any aspect of the universe could be predicted. But the universe, it turns out, is not so tidy. See omnystudio.com/listener for privacy information.

It's a confusing part of climate change when it seems winter is as cold as ever, but as global temperatures creep ever so slightly higher, a cascade of catastrophic events will almost surely follow. The ball is in humanity's court. See omnystudio.com/listener for privacy information.

Like many huge discoveries, X-rays were accidentally stumbled upon. That serendipity led to a medical breakthrough still in use today. Learn about how X-rays are created and why they make such delightful images of our bones. See omnystudio.com/listener for privacy information.

You could be forgiven for thinking the story behind elastics was boring. You’d still be wrong, though. The story of what’s holding up your underwear is a global drama, replete with war, industrial espionage, colonialism, destitute inventors – everything! See omnystudio.com/listener for privacy information.

The world's energy consumption is ruining the planet but for decades physicists have been working on what could solve the world's energy and climate change woes for centuries to come - nuclear fusion. Learn about building stars on Earth in this episode. See omnystudio.com/listener for privacy information.

You know the rule that says the simplest explanation is probably the correct one? That’s called a razor and it’s meant to guide logic. But over time it’s become a broadsword used to disprove opposing arguments. Learn how to spot a faux skeptic in this episode. See omnystudio.com/listener for privacy information.

It’s easy to think of people in the distant past as kinda dumb for believing things like that mice could spontaneously generate from old grain. But if you look a little deeper, you’ll find there was a sensibility to the odd beliefs that came before science. See omnystudio.com/listener for privacy information.

There are a number of theories for how the universe evolved but none are more widely accepted than the Big Bang theory. Learn about the mind-boggling details of the early universe and hear Dr. Neil deGrasse Tyson talk about what it will take for us to know its origins. See omnystudio.com/listener for privacy information.

It evolved over centuries to become the gold standard for conducting scientific inquiry. Yet many people - including some scientists - don't fully understand it. Learn about the basis of how we explore our world in this episode. See omnystudio.com/listener for privacy information.

If you’ve ever wanted to listen to two totally untrained, non-chemists who are fully unqualified to explain how the periodic table works nervously explain how the periodic table works, then this episode is for you. Chemistry majors, be warned. See omnystudio.com/listener for privacy information.

Chuck loved M*A*S*H. Josh didn't. Listen in as they fight to the death. See omnystudio.com/listener for privacy information.

Does singing make you happy? Yes, yes it does. See omnystudio.com/listener for privacy information.

You can make a pretty good case that the rise of opinion “news” and filter bubbles on cable tv created the current cultural and political schism that plagues American society. How did it start? Where did it come from? And what the heck can we do about it? See omnystudio.com/listener for privacy information.