Stuff You Should Know
Does the body replace itself?03/31/15
Does the human body really replace itself every few years? The answer is yes, but different parts of the body do so at different rates. Learn all about which parts of your body are the speediest, and which take the longest to regenerate.
How Desalination Works
Why would people want to remove salt from water? To solve the world's water problem, that's why. Learn all about the efforts to desalinate H2O in cheaper and more efficient ways.
10 Bizarre Medical Treatments
Medical science has a long and storied history of trying out cures and procedures that later strike us as wacky. And they’re still at it today! Learn about bizarre treatments, from opium for children to tobacco smoke enemas in this episode.
Earwax: Live With It
Despite tons of people using cotton swabs each day to clean the earwax from their ears, cerumen (as earwax is clinically known) is actually quite beneficial to the health of your ears – and even kind of ingenious as your body’s defense goes.
How Anesthesia Works
The use of general anesthesia is less than 200 years old. Before doctors were able to cause unconsciousness in patients, surgery was brutal for all involved. But despite this advancement in medicine, science still has no idea how it works.
How Tea Works
Legend has it that tea was discovered by a curious Chinese emperor after leaves blew into his boiled water. Now tea is the second only to water in popularity worldwide. And despite the varieties of tea, they all come from a single species of plant.
How Fleas Work
Fleas are the bane of the existence of pet owners. From their eggs to their lifespan to their feeding habits, fleas are practically designed to be a nuisance. They are parasites, after all. Get down on flea level with Josh and Chuck in this episode.
How Stonehenge Works
Even as far back as the Roman invaders, people have had absolutely no idea just what the massive monument complex in England known as Stonehenge was built for. Join Josh and Chuck as they try to get to the bottom of this Neolithic mystery.
How ESP Works
Even though almost half of Americans believe in it, ESP usually is treated as a load of bull by skeptics. But some respected researchers have dared to apply the scientific method to investigate ESP and a few have found some surprising results.
Some Movies That Changed Filmmaking
An estimated 50,000 films were made worldwide in 2009 alone. Many are surely clunkers, but in this episode Chuck and Josh talk about the ones that emerged throughout cinema history to change the course of all movies that followed. Get your popcorn.
Why Do Lefties Exist?
For at least the last 200,000 years, between 10-15% of the human population are left-handed and this fact has utterly left science baffled. In searching to explain handedness, all sorts of contradictory evidence has emerged, creating a fascinating...
How Perfume Works
Women consistently rate scent as the most important factor in a man’s attractiveness and men have been manipulating that for centuries with scents of all sorts. Learn about the fascinating history -- and, well, art -- of making perfumes in this...
Is there treasure on Oak Island?
Off Nova Scotia, the tiny spit of land called Oak Island has been host to waves of treasure hunters for more than 200 years. Some of them lost their lives in the search for a treasure reputedly buried in a deep pit. But is anything really there?
What is folklore?
What is folklore? Turns out it's just about anything you can think of that's shared by more than two people. Art, literature, stories, dance, music, traditions, even those family heirlooms qualify. Turns out folklore is pretty neat. Learn all about it...
How Feng Shui Works
Feng Shui is an Asian concept that strives to unlock your chi by how your home or office is arranged. Or at least that's the simplified "Western" version. It's a little more complicated than that in reality. We'll unlock your chi by explaining how...
How Ice Cream Works
We all scream for ice cream, sure, but did you know we’re all technically screaming about a colloidal foam? Prepare for deep cravings that will surely emerge as you learn the history of ice cream, how to make it yourself and lots more.
Rainbows: Delighting humanity since forever
Rainbows seem to defy nature, but they're really pretty simple when it comes down to it. Turns out it's just light reacting to water droplets in the air. But they sure do look cool. Learn all about how rainbows are formed in today's episode.
How Hot Wheels Work
If you're an American who had a childhood, you probably have some nostalgia for Hot Wheels. Get your engines revved for this trip down memory lane as we discuss these fun and iconic toys.
How Poison Ivy Works
Poison ivy, oak and sumac are all variations of the same plant and they all can make you itch... if you're susceptible that is. In this episode, you'll learn just about all there is to know about this itch-causing plant, including how to best avoid it.
Nostradamus: Predictor of the future? Not so much.
Nostradamus delighted us all in grade school, but it turns out the real guy wasn't quite as prescient as we were led to believe. In truth, he wrote a lot of purposefully confusing riddles that people have twisted into meaning exactly what they want...
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