You know the at symbol? This thing: @? There?s a name for it, just not in English. We just call it the at symbol. But other countries ? stand back! Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

The KGB was the notorious strong arm of the Kremlin. Run afoul and you died. Learn all about them today. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Guessing is a weird thing. For millennia, it could have meant the difference between life and death. Now it's not as vital, but we still do it every day, whether behind the wheel of a car, or judging what another person might be feeling. In this classic episode, learn everything we know about the brain and how it manages this odd, very human act. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

There is maybe nothing that sounds more boring than hearing two people talk about soil, but friend, prepare to be amazed at the details of what makes this amazing substance the life blood of Earth itself! Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Why are some words funnier than others? Well, one man has sought to figure that out. We'll tell you all about him and his project in today's episode. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Researchers have noticed that as incidence of anger increases so too has teeth grinding, known clinically as bruxism. That?s a problem because when people grind their teeth, especially when they?re sleeping, they can wear them down to nubs. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

There is a lot ? A LOT ? to juggling and Chuck and Josh go over the lion?s share of it in this classic episode. Delve into the deep history, physics, how-tos and different types of juggling in this surprisingly sweeping look at a putatively innocuous pastime. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Matcha is something else, healthy and delicious and all the rage. Learn all about this trendy beverage today. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

A gaggle of geese. A murder of crows. Nouns of assemblage are awesome and we talk about them for about 12 minutes in today's Short Stuff installment. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Sure you know all about ultrasound. You can see pictures of little babies right there cozy in the womb just by waving a magic plastic stick over the mom?s tummy. And magic is basically right. Believe us. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

People often ask us how we do our research. We're not going to disclose all of our secrets, but we'll give you some tips on how to root out the bad studies from the good ones. Learn all about shady studies and reporting in this classic episode! Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Haint Blue is a kind of robin's egg color that you might commonly find on porches of the low country of the Southeastern United States. But what does it have to do with ghouls and ghosts? Listen and learn! Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

The Seven Countries Study was a fairly impressive, long-term study on the effects of fat in our diet, among other things. But it was very flawed and launched the misguided "War on fat." Learn all about today, then make up your own mind. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Who first decided that it would be a great idea to shoot flame at other people from a distance? Josh and Chuck talk about the (very) early origins, history and technology of the flamethrower in this classic episode. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

There?s a persistent insistence that you can ingest a tapeworm and as the parasite hijacks a lot of the calories you eat, the pounds will fall right off. In theory this could be true, but it?s also extremely dangerous. And has anyone ever really done it? Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Foie gras means ?fatty liver? in French, which makes sense because it?s made from the overripe livers of force-fed ducks and geese.  Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

In yet another testament to how amazingly great the 70s were, in 1975 the US started a program that tried to harness the powers of clairvoyance to remotely spy on the Soviet Union. Since clairvoyance doesn?t seem to exist, it wasn?t super successful. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

The Black Panther Party was a complex political movement that was unfairly painted as a militant group who hated white people. Far from it, they were actually men and women trying to affect change in their community. Their history is one of the more interesting American stories, from the early stages of policing the police to their community service efforts to their inevitable fall. Learn all about the Black Panther Party in this classic episode. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Tank Man. An indelible image burned in our brains. But what led to this extraordinary event? Chuck and Josh walk you through the days and weeks leading up to the massacre at Tiananmen Square, which is more of a cautionary tale than we realized. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

The lake from one of the all-time great movies (search your feelings, you?ll find that it?s true) is turning into a dried up mudhole. Turns out it has some unusual features. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

We've covered a lot of drugs in our history, and today we tackle heroin, one of the most dangerous of all. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

It?s likely that without the invention of the pneumatic jackhammer, the Industrial Revolution wouldn?t have hummed along quite so smoothly. Certainly a lot more trains would go around mountains than through them. Learn about this essential tool in this classic episode. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

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. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

There was a time when kids had to look out for flying darts that could pierce their skulls when they played in the backyard. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

If you didn?t already know how amazing hummingbirds are, prepare to learn. Not only do they count among their numbers the smallest bird species, they are also lightning fast and have the endurance of a marathoner and a telethoner put together. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

The Enlightenment stands as the moment the West withdrew from superstition and found its faith in reason. Did it shift too far? In this classic episode, learn about this massive shift in thinking which we are still sorting through and coming to understand today. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Hi listeners, in case you haven't heard already, iHeartRadio just released a brand new podcast called Commencement: Speeches for the Class of 2020, where we collected speeches from notable folks all over and asked them to give their best advice, thoughts and words of wisdom to graduating seniors. In this episode of Commencement: Speeches for the Class of 2020, Josh Clark, co-host of the Stuff You Should Know podcast, divulges secrets to graduates that their parents and teachers may have neglected to tell them. If you'd like to hear the other speeches, including ones from John Legend, Bill & Melinda Gates, Tim Cook, Katie Couric, Ryan Seacrest, Abby Wambach, and more, just search "Commencement: Speeches for the Class of 2020" in your podcasting app of choice! Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Bras are loved and hated, sometimes at the same time. But as difficult and restrictive as they can be, they rescued women from a much cruel contraption: corsets. The question remains, though, do women need bras at all? Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Did you know the little nursery rhyme is controversial? It?s true: Two towns in New England can barely stand to see one another on the map (kind of). Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Something spooky was born on the American frontier in the mid-19th century: the idea that people?s personalities survive death and that some gifted individuals can communicate with them. It developed into a religion that some still practice today. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Hi listeners, in case you haven't heard already, iHeartRadio just released a brand new podcast called Commencement: Speeches for the Class of 2020, where we collected speeches from notable folks all over and asked them to give their best advice, thoughts and words of wisdom to graduating seniors. In this episode, our very own Chuck Bryant reminds graduates to not let this season define them, reminding them the world believes in their ability to craft a better future for themselves. If you'd like to hear the other speeches, including ones from John Legend, Bill & Melinda Gates, Tim Cook, Katie Couric, Ryan Seacrest, Abby Wambach, and more, just search "Commencement: Speeches for the Class of 2020" in your podcasting app of choice! Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Creating fire was possibly the most important human discovery, but it's easy to take for granted. But. Josh and Chuck get to the bottom of the chemistry of fire in their quest to explain everything in the universe, in this classic episode. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

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. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

You know those terrible leg cramps that come out of nowhere? They may be named after a drunken baseball pitcher. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Herd immunity is an epidemiological concept that if enough people are inoculated against a disease the rest of us won?t get it. It?s been useful in holding back diseases like polio and measles, but we have vaccines for them. We don?t have one for Covid-19. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Entrances to the underworld have been places of wonder for eons, and humans have ventured into caves to sleep, hunt, create art and explore. Thanks to the hobby of caving, that tradition continues today. Get all this plus Chuck discussing his caving experience, in this classic episode. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

The zipper may be the most unsung invention we humans have ever come up with. Prior to zippers, everyone walked around like idiots with nothing but buttons to hold their clothes together. The zipper changed all that. The zipper changed everything. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

There was a glorious time in American history when circus sideshow performers lived together in a small town in Florida. Learn about the fascinating history of Gibtown today! Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Spartacus was a real dude. He led a slave revolt, and was pretty successful to boot. I'm Spartacus. You're Spartacus. We are all Spartacus. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

A dog that knows exactly when its owners will arrive home every day seems to have a human perception of time, but in fact, they perceive time very differently than we do. Find out more about how dogs view time in this classic episode. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Agatha Christie was a great writer of murder mystery novels and is probably the best selling author of all time. Listen in today to learn her story. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Business in the front, you know the rest. Listen in as we discuss the lifestyle choice that is the mullet. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

An existential risk is a special kind of threat that are different from other types of risks in that if one of them ever befalls us, it would spell the permanent end of humanity. It just so happens we seem to be headed for just such a kind of catastrophe. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Back when this episode aired, the USPS was teetering on the edge of going under and there were a lot of plans on the table to save it. With the USPS again at risk now for different reasons, join Chuck and Josh as they explore the history and future of the postal service in this classic episode. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

As part of a super 70s push to get Earth to a seat at the table of the Galactic Federation (in case there is, in fact, such a thing), astronomer Carl Sagan oversaw an ambitious project to launch a compilation of Earth?s greatest hits into deep space. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Today Chuck and Josh take a shallow dive in the warm pool that is the NY Times Crossword Puzzle. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Today, Chuck and Josh dive into the funky, cool world of the classic TV show, Sooooooooul Train. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Yes, it's true: Unions have a shady mob-related past and were originally championed by anarchists. Born from medieval trade guilds, these organizations also helped grow the American economy, and not only protected but established workers' rights. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

All that gross stuff we humans put in the water that gets flushed down the sewers has to be taken back out before that water is reintroduced to the environment. That?s the ideal, and it?s essential to staving off the imbalance people bring to the planet. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers