If you're ticklish, you know that you can't stop from laughing and wiggling around when you get tickled! But why does your body react this way, and why can't you stop it? Jessi's here to fill you in!

From the ability to see “invisible” types of light to the power to taste all over their body, meet five incredible animals whose super senses far surpass our own! Chapters STAR-NOSED MOLES 3:04 HARBOR SEALS 4:56 CATFISH 6:49 BEARS 8:26

China's one-child policy ended in 2015, but we're just beginning to understand what it was like to live under the program, says TED Fellow and documentary filmmaker Nanfu Wang. With footage from her film "One Child Nation," she shares...

What does Kendrick Lamar have in common with Disney's "Moana"? They recognize our common humanity and show us how to love ourselves and one another, says writer and educator Chloé Valdary. She shares how she uses pop culture to help...

Have you ever read Harry Potter and wished that you were a student at Hogwarts, studying magic with Harry, Ron, and Hermione? Well, your wish might have partially come true, without you knowing it.

Day by day, country by country, we tend to measure seasons differently.

In this video Paul Andersen explains how the gas pressure is the force applied over the area of the container. It is also the change in momentum as gas molecules interact with the container and is uniform throughout the sample. Several...

Synesthesia allows people to hear color or taste numbers,and maybe even remember some things better than the average person.

How do you stand up to authoritarianism? And what does it mean to be "fearless"? In this powerful talk, housewife-turned-politician Sviatlana Tsikhanouskaya describes her unlikely bid to defeat Belarus's long-time autocratic leader in...

If, when your childhood pet passed away, your father remarked, “Well, I’ll be dog-gone,” you might be the victim of a dad joke. Fortunately, dad jokes might actually be a good thing.

Marco Tempest spins a beautiful story of what magic is, how it entertains us and how it highlights our humanity -- all while working extraordinary illusions with his hands and an augmented reality machine.

Social psychologist Thomas Curran explores how the pressure to be perfect -- in our social media feeds, in school, at work -- is driving a rise in mental illness, especially among young people. Learn more about the causes of this...

Just what is the difference between sensing and perceiving? And how does vision actually work? And what does this have to do with a Corgi? In this episode of Crash Course Psychology, Hank takes us on a journey through the brain to...

Hank resists the urge to devour a slice of pizza so that he can walk you through the way we experience our major special senses. It all boils down to one thing: sensory cells translating chemical, electromagnetic, and mechanical...

We're taught to try to live life without regret. But why? Using her own tattoo as an example, Kathryn Schulz makes a powerful and moving case for embracing our regrets.

You know ice cream tastes good, but have you ever wondered HOW you can taste it in the first place? Join Jessi and Squeaks to get the scoop on how your tongue helps you taste tasty tastes!

Inspiration can be a hard thing to pin down, but scientists actually have found evidence-backed ways to encourage it to happen!

Jane Poynter tells her story of living two years and 20 minutes in Biosphere 2 -- an experience that provoked her to explore how we might sustain life in the harshest of environments.

Check out the fascinating ways orchids trick insects into pollinating, using sexual deception, pheromones and mimicking the shapes of other plants. -- Nearly 28,000 species of orchid grow all around the world, bearing every...

Paul Andersen explains how we perceive our environment using our sensory system. He starts with a brief discussion of action potentials and the nervous system. He shows that we many more than five senses. He goes into more detail to show...

Brené Brown studies human connection -- our ability to empathize, belong, love. In a poignant, funny talk, she shares a deep insight from her research, one that sent her on a personal quest to know herself as well as to understand...

TED Fellow Zahra Al-Mahdi was raised by screens -- "storytelling machines" like TV and the internet that shaped her sense of self and reality. Now a multimedia artist and filmmaker, she challenges common historical narratives and...

Scientists believe that your taste receptors are meant for taste, but how do they explain the taste receptors on your lungs?

Our bodies _ the physical, biological parts of us - and our minds - the thinking, conscious aspects - have a complicated, tangled relationship. Which one primarily defines you or your self? Are you a body with a mind or a mind with a...