You might be susceptible to "tickle attacks," but have you ever wondered why you can't tickle yourself?

The wheels in your brain are constantly turning, even when you're asleep or not paying attention. In fact, most of your brain's activities are ones you'd never be aware of - unless they suddenly stopped. Nathan S. Jacobs takes us inside...

It starts with a tickle in your throat that becomes a cough. Your muscles begin to ache, you grow irritable, and you lose your appetite. It's official: you've got the flu. It's logical to assume that this miserable medley of symptoms is...

Psyche was born so beautiful that she was worshipped as a new incarnation of Venus, the goddess of love. But human lovers were too intimidated to approach her, and Apollo recommended her father abandon her on a crag where she would marry...

Every year, ocean levels rise and high tides flood the low-lying Marshall Islands in the Pacific, destroying homes, salinating water supplies and disrupting livelihoods. In a stirring poem and talk, youth climate warrior Selina Neirok...

If you’ve used a weighted blanket before, you might have felt how weirdly comforting it is, but can it actually help your mental health?

Everyone has dreams, but some people are better at remembering them than others. Scientists aren't sure why we dream, but remembering them has a lot to do with the activity in your brain, and with how well you sleep.

Over 100,000 metric tons of caffeine are consumed around the world every year. That's equivalent to the weight of 14 Eiffel Towers! Caffeine helps us feel alert, focused, and energetic, even if we haven't had enough sleep - but it can...

Eye boogers: Not the most glamorous of bodily secretions, but important all the same. Learn why the heck you have sand in your eyes in the morning in this episode of Quick Questions.

You might think your grandma who wakes up at 4am just needs less sleep than younger people. Not so! Studies suggest there are some bizarre reasons older people rise at the crack of dawn, including something called brain sand!

Our bodies do a lot of weird things, and many of them are completely involuntary. Why do we often jerk our bodies awake right before falling asleep? Why do we yawn? Why do we hiccup? Why do some people sneeze when they look at the sun?...

Alix Generous is a young woman with a million and one ideas -- she's done award-winning science, helped develop new technology and tells a darn good joke (you'll see). She has Asperger's, a form of autistic spectrum disorder that can...

Despite some bold claims, most supplements can’t really "boost" your metabolism, and the actual changes we can make to it are pretty limited.

If you feel like you’ve been more forgetful than normal recently, you’re definitely not alone. Your memory can have a lot to do with what's happening around you.

Turns out, two atomic clocks are indeed better than one. And what role does sleep play in memory suppression?

Silence is a rare commodity these days. There's traffic, construction, air-conditioning, your neighbor's lawnmower ... and all this unwanted sound can have a surprising impact on your health, says noise researcher Mathias Basner....

What's black and white, big and fuzzy, and likes to eat bamboo all day? A panda! Join us to learn all about this rare bears and the challenges they face as their habitat disappears.

Dolphins aren't just smiley and cute! Jessi gives you 5 reasons why dolphins are awesome in this episode of SciShow Kids.

Is there something you've always meant to do, wanted to do, but just ... haven't? Matt Cutts suggests: Try it for 30 days. This short, lighthearted talk offers a neat way to think about setting and achieving goals.

Sensory deprivation tanks have grown in popularity recently, and while the research is not extensive, scientists have found some positive effects from spending some time without so much stimulation.

Ever wonder why something as heavy as a cruise ship could float above the water? Learn about displacement with Jessi and The Giant Squid, Squidstravaganza!

Every year worldwide, more than 50,000 otherwise healthy people with epilepsy suddenly die -- a condition known as SUDEP. These deaths may be largely preventable, says AI researcher Rosalind Picard. Learn how Picard helped develop a...

Hank describes how our brains respond biochemically to various addictive substances and behaviors and where those responses have come from, evolutionarily speaking.

Hank tells us some of the surprising things that could be causing or contributing to the obesity epidemic.