What’s up with ticklishness? And are other animals ticklish, too? Quick Questions has the answers!

Hank describes some of the best explanations that neurologists have come up with to account for the strange sensation we know as déjà vu.

SciShow explores a newly identified neurological condition, aphantasia, the inability to visualize things in your imagination, and gives tribute to Dr. Oliver Sacks, popular explorer of the human mind.

Hank makes it all better by explaining the biochemistry of pain -- how it works, why we have it, and how painkillers, whether they're over the counter or heavy-duty prescription bad boys, make the pain go away.

Taking design cues from origami, robotician Jamie Paik and her team created "robogamis": folding robots made out super-thin materials that can reshape and transform themselves. In this talk and tech demo, Paik shows how robogamis could...

In 1901, David Hänig published research that led to what we know today as the taste map: an illustration that divides the tongue into four separate areas. It has since been published in textbooks and newspapers. There is just one...

HOMUNCULUS! It's a big and weird word that you may or may not have heard before, but do you know what it means? In this episode of Crash Course Psychology, Hank gives us a deeper understanding of this weird model of human sensation.

At the turn of the 18th century, audience were ready to go over the top, and get some really, really dramatic theater in their lives. Like, a dog dueling a man type of dramatic. In London, only two theaters were licensed, but...

The sensation of time slowing down during intense situations is a commonly reported phenomenon, but what's actually going on?

Countless poets and writers have tried to put words to the experience of a panic attack— a sensation so overwhelming, many people mistake it for a heart attack, stroke, or other life-threatening crisis. Studies suggest that almost a...

Ever wondered what causes that strange tingling feeling? Well, settle in as Quick Questions explains how it works. Just be careful how you sit.

There are lots of reasons stinky things don’t smell as strong in cold weather. You can maybe guess some of the reasons, but others may surprise you!

It’s hard to resist the urge to scratch an itch, but doing so could help break that vicious cycle of itchiness.

Hank describes some of the best explanations that neurologists have come up with to account for the strange sensation we know as déjà vu.

Ever get a tingling sensation while getting your sweat on? The ingredients to your drink may be why.

The average person experiences dozens of individual itches each day. We've all experienced the annoyance of an inconvenient itch - but have you ever pondered why we itch in the first place? Is there actually an evolutionary purpose to...

Some people can eat raw jalapeños like they're apples. Why do some people have a high tolerance for spicy food while others can't stand it?

Hank makes it all better by explaining the biochemistry of pain -- how it works, why we have it, and how painkillers, whether they're over the counter or heavy-duty prescription bad boys, make the pain go away. Chapters View all...

One of these three creatures is thought to possess the world's most painful insect sting: there's an ant that forages in rainforest canopies, a bee that protects a hive of delectable honey, and a wasp that paralyzes tarantulas. So which...

A Quick Question answer that explains the chemistry that makes minty things taste “cool” and spicy things taste “hot”.

How does one experience synesthesia -- the neurological trait that combines two or more senses? Synesthetes may taste the number 9 or attach a color to each day of the week. Richard E. Cytowic explains the fascinating world of entangled...

Hunger claws at your belly. It tugs at your intestines, which begin to writhe, aching to be fed. Being hungry generates a powerful and often unpleasant physical sensation that's almost impossible to ignore. After you've reacted by...

As parents, it's our job to teach our kids about sex. But beyond "the talk," which covers biology and reproduction, there's so much more we can say about the human experience of being in our bodies. Introducing "The Talk 2.0," Sue Jaye...

The Greek philosopher Aristotle used sensory experiences and body parts to propose that humans have five senses. But almost as soon as he proposed them, people noticed things that didn’t fit the bill. And the debate has continued ever...