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Your Tattoo is INSIDE Your Immune System. Literally

AdultsArtHuman...
Your tattoos are inside your immune system, literally. With each very tasteful piece of art, you kick start a drama with millions of deaths, grand sacrifices and your immune system stepping in to protect you from yourself.

Why Are Frogs So Colourful?

KidsAnimalsNature...
Join Squeaks as he learns about some of the most colourful animals ever: poison dart frogs!

What The Prisoner's Dilemma Reveals About Life, The Universe, and Everything

AdultsEducationPsychology...
This is a video about the most famous problem in Game Theory, the Prisoner’s Dilemma.

Why Does Peppermint Taste So Cold?

KidsFoodNature...
Jessi and Squeaks explore why peppermint candies, and mint plants in general, make your mouth feel cold.

This Nuclear Conspiracy Theory is CRAZY

AdultsEducationPhysics...
When we published a video from Hiroshima, a new kind of conspiracy theorist crawled out of the woodwork.

What Is Osmosis?

KidsExperimentsHow-to...
What is Osmosis? Let's find out with Dr. Ion.

How To Destroy The Universe

AdultsEducationScience...
The universe is going to die one day, and a fight between two titans will decide our cosmic fate.

The Science Of Ice Skating

KidsScienceSports...
In this episode, Jessi and her friends at The Fort learn about the physics behind all the slippery fun you can have on the ice.

Can AI Catch What Doctors Miss? | Eric Topol | TED

AdultsHealthHuman...
AI could propel the biggest transformation in the history of medicine, says physician-scientist Eric Topol.

How Do Erasers Erase?

YouthHow-toScience
Are you wondering how erasers erase? Let's find out together.

How to Win an Interstellar War

AdultsEducationScience...
Could aliens destroy us from light years away? Another day at Kurzgesagt Labs, where we answer the most important questions with science.

Vaccinating Honeybees

KidsAnimalsScience
The Canadian Food Inspection Agency has approved the first-ever vaccine for honeybees in Canada.

You Are Your Microbes

YouthBiologyScience
Jessica Green and Karen Guillemin emphasize the importance of understanding the many organisms that make up each and every organism.

World's Best Night Vision Goggles

AdultsLifeScience...
We visited the US Navy to test the best night vision goggles in the world.

Diplocaulus: An Ancient Animal

YouthAnimalsHistory...
Squeaks and Jessi discover an animal with a head that reminds them of a boomerang.

How Did Humans Evolve? Crash Course Biology #19

AdultsHealthHuman...
What’s a human? And how did we become humans, anyway?

Elmo Learns About Science

KidsScienceTechnology
Elmo learns all about the different jobs that scientist do! They can study space, bugs, rocks, and more!

Eclipses Used To Be Terrifying

YouthHistoryScience...
Because eclipses are powerful and frightening events, ancient cultures went to great lengths to understand eclipses.

The Ice Bucket Challenge Actually Worked

YouthGeneticsHealth...
The Ice Bucket Challenge raised millions of dollars for research into treatments for ALS, or Lou Gehrig's disease.

You Went Through Puberty as a Baby

AdultsHealthHuman...
We all remember the woes and trials of our adolescence.

4.5 Billion Years in 1 Hour

AdultsEducationHistory...
Earth is 4.5 billion years old - which is approximately the same amount of time it took us to create this video.