Can you spot a fake smile?

The History of Keeping Time - Karen Mensing
Does Sparkling Water Ruin Your Teeth?
Who was Confucius? - Bryan W. Van Norden
Hank vs. Hank: The Net Neutrality Debate in 3 Minutes
5 Ways to Build Focus and Concentration - College Info Geek
400 and Gamebooks - Numberphile
The Art of Balance, with Philippe Petit
Joni Mitchell on Illusions | Blank on Blank
The Politics of "Parks and Rec"
Why Do We Itch?
How Do Sparklers Work?
This Is Your Brain On Extreme Weather
Why do mosquitoes prefer biting some people to others? - Big Questions - (Ep. 26)
Cloudy climate change: How clouds affect Earth's temperature - Jasper Kirkby
The ABC's of gas: Avogadro, Boyle, Charles - Brian Bennett
How Was the Grand Canyon Formed?
Why Are Vegetarians Annoying? (An Exploration of a Cultural Rift)
Methane Explosion (SLOW MOTION) - Periodic Table of Videos
The Ingredients for Life in Space
How Airplanes Are Made
A Shocking Insight into Food Wastage | The Beast File
What's Hiding Deep Within The Ocean?
Sleep: Why We Need It and What Happens Without It
Can You Burn Metal?
Why the solar system can exist
Why we do what we do | Tony Robbins
Can You Solve This?
22 Bizarre Conspiracy Theories - mental_floss List Show Ep. 323
Why are some people left-handed? | James May's Q&A (Ep 39) | Head Squeeze
Why Do Boomerangs Come Back? | Earth Lab
"YOU WON'T BELIEVE YOUR EYES!" - Smarter Every Day 142
What Is Squid Ink?
Two reasons companies fail -- and how to avoid them | Knut Haanaes
33 Unusual Old Remedies - mental_floss List Show Ep. 327
How Does Coal Walking Work?
How Does A Boomerang Work?
What Do Hot Sauce Labels Say About America? | Idea Channel | PBS Digital Studios
Primary Elections Explained
Is There A Noise Loud Enough To Kill You?
Does Hypnosis Actually Work?
How to use a semicolon - Emma Bryce
Want to Be a World Class Salesperson? Connect with the Moral Imperative to Sell, with Kip Tindell
Governments Can't Singlehandedly Save the Planet
Henrietta Leavitt & the Human Computers: Great Minds
Frank Zappa on Fads
5 Common Myths About Evolution | Mashable
How far away might extra-terrestrial life be? | Number Hub (Ep 27) | Head Squeeze
Dord.
Stuff of Genius - Al Gross and the Walkie-Talkie
29 Dumb Facts About Dessert - mental_floss List Show (Ep.227)
Misnomers
Animal Development: We're Just Tubes - Crash Course Biology #16
Bureaucracy Basics: Crash Course Government and Politics #15
Amazing Facts About Whales!
Eukaryopolis - The City of Animal Cells: Crash Course Biology #4
What happens when a city runs out of room for its dead | Alison Killing
Why Does the Wind Blow?
What's The Deadliest Animal In The World?
RSA ANIMATE: The Divided Brain
Where Does Your Poop Go? | Brit Lab
Madagascar's Mysterious Fossa | National Geographic
Faster Than Light Neutrinos (maybe): Field Trip!
Anand Giridharadas: A tale of two Americas. And the mini-mart where they collided
Dungeons & Dragons and the Influence of Tabletop RPGs | Off Book | PBS Digital Studios
What is up with Noises? (The Science and Mathematics of Sound, Frequency, and Pitch)
How to make a mummy - Len Bloch
DNA: The book of you - Joe Hanson
Time Dilation illustrated within ten seconds
15 Facts about Coffee - mental_floss List Show Ep. 405
Does Sound Affect Driving? | Bang Goes The Theory | Brit Lab | BBC
Life of an astronaut - Jerry Carr
Las Vegas isn't Las Vegas
The Science of Color Blindness
Pokémon in REAL LIFE?
What Makes Airplanes Light Enough To Fly?
5 Crazy Ways Social Media Is Changing Your Brain Right Now
The One Ring Explained. (Lord of the Rings Mythology Part 2)
Nicholas Christakis: The Sociological Science Behind Social Networks and Social Influence
Will Dancing Get You Laid?
Should We Contact Uncontacted Peoples?
The Cold War: Crash Course US History #37
How the heart actually pumps blood - Edmond Hui
Daniele Quercia: Happy maps
5 Star Trek Gadgets That Became Real | What the Stuff?!
Take a Trip Through Space!
Dante's Inferno - Thug Notes Summary and Analysis
The pleasure of poetic pattern - David Silverstein
Does grammar matter? - Andreea S. Calude
A brief history of video games (Part I) - Safwat Saleem
New York -- before the City | Eric Sanderson
The History of Search and Why it Sucks
How to detect a supernova - Samantha Kuula
World’s Most Asked Questions: What Is Love?
Why No Giant Mammals?
The Rise of Videogame Economies | Off Book | PBS Digital Studios
The Evolution of Music Online | Off Book | PBS
Why Do We Forget Things?
Time is a Flat Circle? (Nietzsche + Mega Man) – 8-Bit Philosophy
Misconceptions from Television - mental_floss on YouTube (Ep. 14)
Should "Happy Birthday" be Protected by Copyright? | Idea Channel | PBS Digital Studios
Solution to the Grandfather Paradox
The Grapes of Wrath - Thug Notes Summary and Analysis
The Clinton Years, or the 1990s: Crash Course US History #45
Why Do Onions Make You Cry?
How To Draw An Impossible Shape | HowStuffWorks Animations
Animal Farm - Thug Notes Summary and Analysis
Can You Drink Too Much Water?
The Scarlet Letter - Thug Notes Summary and Analysis
Why Do We Have More Boys Than Girls?
5 Life Hacks That Don't Actually Work
The War of 1812 - Crash Course US History #11
The Difference between the United Kingdom, Great Britain and England Explained
Do You Want to Believe? | Idea Channel | PBS Digital Studios
5 Reasons Space Exploration Matters to You | What the Stuff?!
Are Hand Dryers Sanitary?
Will Genetic Modification Create Perfect Humans?
Why Are Cicadas So Good At Math?
Why Do You Get A Sunburn?
Where Did The Earth Come From?
Do My Feet Smell Like Doritos?