Freedom of speech and the press are values vital to American democracy. But the First Amendment doesn't really define free speech, and plenty of expressions are restricted. Learn all about the ins and outs of this cherished right in this classic episode.

Crash testing has been around since the 1930s, but only got serious in the 1970s. Today we dive in and learn all about why companies and the U.S. government purposefully wreck cars.

Pigs, hogs, boars and javelinas. What's the difference? Tune in to find out.

There was a time when the lower classes of the American South were considered lazy and dimwitted, a stereotype that still somewhat survives today. But this stereotype was rooted in fact. Hookworms, it turns out, were sapping Southerners’ life force. Find out all about it in this classic episode.

In 1215 at Runnymede (doo dah, doo dah) the nobles and the king agreed to end a rebellion against the power of the English throne. While the treaty that emerged contained all sorts of arcane Medieval details, it also contained the seeds of Western liberty and civil rights.

In today's short stuff, we bust a few myths about cute little chameleons.

The Hotel Cecil in downtown Los Angeles has had no less than 16 unnatural deaths, from suicides to murders and everything in between. Listen in to the history of this decidedly creepy hotel. 

When your kid boils over in the grocery store, it can be tough to stay calm and ignore it, but that's precisely what experts prescribe parents do to deal with temper tantrums. Learn about the anatomy of a tantrum and the best way to deal in this classic episode.

Josh and Chuck finally put to rest the age old debate over which is better – and learn a little about themselves along the way.

One of the oldest medical procedures in human history is also one of the riskiest. For thousands of years humans carried a type of proto brain surgery where a hole would be cut into the skull. And they were pretty good at it too.

You may think composting is just a bunch of old banana peels rotting away into dirt but, friend, you're not looking closely enough. Inside that compost pile is a microcosmic universe doing some magical stuff. Learn all about it with Josh and Chuck in this classic episode.

Jackalopes aren’t real, right? Wouldn’t you like to know, city slicker.

The story of Les Paul and Leo Fender defines rock and roll music. Listen in to part one of the tale of these two musical rivals.

In the early 21st century a trend of people who claim to be able to telepathically and clairvoyantly communicate with animals has grown. Today, the concept of visiting a pet psychic to find a lost pet, find out why a pet is behaving badly or even to learn if a pet is ready to be put to sleep is becoming more commonplace, but is there any basis to pet psychics' abilities? Join Josh and Chuck as they investigate the pet psychic phenomenon, in this classic episode.

Y2K was a special time when we all thought nothing bad would really happen at the stroke of midnight, but secretly worried the world would end. Turns out the mitigation efforts worked and we hardly noticed.

Lazarus species were thought to be gone, but had something else in mind. Today we talk about 5 of them.

It's strange to hear, but the transition from hunting-gathering to agriculture, including the domestication of wild animals, is the single biggest thing to ever happen to humanity. You can thank it for everything from kingdoms to Ebola. Learn all about it in this classic episode.

Humpty Dumpty is not a good nursery rhyme. And what was Humpty anyway? Listen in to find out.

Landslides are a form of mass movement of the Earth, and with the amount of death and destruction they wreak on the people and towns they cover, their toll can be massive. Learn all about landslides with Josh and Chuck in this classic episode.