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In this episode, Josh explains why us humans get goosebumps, taking us through our nervous system's response to certain stimuli and the purpose this might have served in our evolutionary past.

On June 11, 1963, a Vietnamese monk named Thich Quang Duc shocked the world when he burned himself to death in protest against the Vietnamese government, a gesture known as self-immolation. Josh and Chuck delve into this political statement.

Did you know urine has epithelial cells that can be converted into teeth? Tune into Trapped in a Meeting for the full scoop on pee teeth.

In 1964, airline security was nowhere near as tight as it is today. Josh and Chuck detail a tragic event involving a flight hijacked by a disturbed man. Plus, the spying subplot wraps up with Josh and Chuck hurrying to clear out before it's too late.

In the first installment of our month-long special shark series, Josh and Chuck talk about Shark Awareness Day, an international holiday that raises awareness of the threats sharks face from humans.

On June 4, 1989, the Chinese government presided over a brutal crackdown on student protesters. Twenty-four years later, it still resonates in worldwide politics. Josh and Chuck mark the anniversary in this episode of This Day in History.

Have you ever wondered what the surface of Mars looked like? Well NASA sure did, so they created the Viking program to figure it out. On This Day in History, Josh and Chuck take a look back at Viking 2.

For many of us, the thought of totem poles conjures up images of sacred rituals and mysterious ceremonies. Join Josh and Chuck from Stuff You Should Know as they uncover the real truths behind totem poles.

You might think the guillotine was abolished as a form of death penalty 100 years ago, but you would be incorrect. The last use of the guillotine was actually in the 1970s.

Did you know pinball was once considered gambling and therefore illegal in some places? On Trapped in a Meeting, Josh and Chuck recount the story of how one pinball wizard's mean game of pinball proved that pinball is more than a game of chance.

The realism of animatronic models has made big strides in recent years, thanks to the advent of high-quality computer scanning technology. On this week's Trapped in a Meeting, find out how this has been applied to Disneyworld's animatronics.

One of the top TV shows in history, M*A*S*H brought viewers into the world of the Korean War doctors of the 4077th unit each week for 11 strong seasons. The show made TV history when it bowed to the most viewers ever during its final episode.

Have you ever heard the phrase "Let's not throw out the baby with the bathwater," or variations? This week on Trapped in a Meeting, Josh schools Chuck on the origins of this odd expression.

Sada Abe is a notorious figure in Japanese history, known for her shocking acts which included everything from murder to castration and even necrophilia. Tune in to find out more about this infamous case.

Did Ivan the Terrible rule Russia and have the architects of the cathedral gouged? Josh reveals the truth about Ivan the Terrible in this episode of Don't Be Dumb.

Throughout parts of Europe, April 30 is Walpurgis Night, a Halloween companion holiday of sorts. So where does the name come from, and how does one go about celebrating? Josh and Chuck have got you covered.

Have you ever thought about what would happen if you dropped a penny off the Empire State Building? Josh has, and he's here to tell you all about it. Settle in and get ready for another installment of Don't Be Dumb.

Everyone knows about Abraham Lincoln's assassination, and that of JFK. But do you know the story behind the first ever attempt on an American president's life? Find out the crazy details on this week's Trapped in a Meeting.

On This Day In History, Ellis Island, the gateway to America for millions of immigrants, closed for business. Learn about the symbol of immigration to America in the 20th century in this episode.

The idea for Personal Rapid Transport goes as far back as 1953, with the thought of combining taxicabs with subways. Join Josh and Chuck from Stuff You Should Know as they ponder the feasibility of this idea.

Maybe you're one of those people who likes to sound smart by using the Latin abbreviations e.g. and i.e. If so, brother, you'd better be using them right because that kind of thing makes people want to gun for you.

Do you think the Great Wall of China is the only manmade structure that is visible from space? Think again, Jack. You can't even see that thing. Get set straight by Josh here in this video.

In this week's installment, Chuck tells Josh about a creature known as the toothpick fish, and relates some helpful advice in regards to swimming in the Amazon river. If it's Monday, it must be Trapped in a Meeting.

People with mirror-touch synesthesia literally feel the pain of others -- but why? Tune in as Josh and Chuck explain the fascinating mechanics of mirror neurons in this exclusive video from HowStuffWorks.com and the Science Channel.

Have you ever heard the expression "It's hot enough to fry an egg on the sidewalk"? Did you wonder if that's actually possible on a typical hot day? Josh did, and he's here to give you the skinny on it in another episode of Don't Be Dumb.