Why Aren’t Humans Naturally Nocturnal?

When Insanity Becomes Normal - Venezuela
Language: Crash Course Psychology #16
Winter is Coming (unpredictable seasons) - Sixty Symbols
The Most Epic Sites On Mars That Humans Should Visit
Dracula - Thug Notes Summary & Analysis
The Science of Hyperloop
How Do Marine Mammals Hold Their Breath For So Long?
The many meanings of Michelangelo's Statue of David - James Earle
The Simple Solution to Traffic
People Will Misjudge You Unless You Manipulate Them
What Really Killed the Dinosaurs?
Roxane Gay: Confessions of a bad feminist
Iraq Explained -- ISIS, Syria and War
How Many Things Are There?
All About Allergies
How Do Tattoo Machines Work?
Why do women have periods?
Olympics: Good or Bad?
Special Relativity - 60 Second Adventures in Astronomy (10/14)
16 Misconceptions About Football - mental_floss List Show Ep. 434
The Legendary Chronicles of Kim Jong Il | The Beast File
Why we need gender-neutral bathrooms | Ivan Coyote
Chimps have feelings and thoughts. They should also have rights
Rhythm in a box: The story of the cajon drum - Paul Jennings
How Much Does The Internet Weigh?
last words
Dolly Parton on Getting Dirty | Blank on Blank
26 Interesting Facts About Beer - mental_floss on YouTube (Ep.38)
Airglow: Why The Night Sky Is Really Green
Why is being scared so fun? - Margee Kerr
What is Sea Level?
ATP & Respiration: Crash Course Biology #7
Mysteries of vernacular: Noise - Jessica Oreck
25 Amazing Nerdcations - mental_floss List Show Ep. 428
The Four "New" Elements & How We Got Them–Speaking of Chemistry
22 Horror Movie Facts - mental_floss List Show Ep. 334
Literally Hitler
Climate Change, Chaos, and The Little Ice Age - Crash Course World History 206
Understanding Ukraine: The Problems Today and Some Historical Context
Why Does Plane Food Taste So Bad?
Central Nervous System: Crash Course A&P #11
Why Do Women Live Longer Than Men?
Brinicles: Icicles o' Death
How We Eradicated Cattle Plague
Is Reality TV The Future of Space Travel? | Idea Channel | PBS Digital Studios
Ocean Confetti!
The Scientific Power of Naps
The Arrow of Time feat. Sean Carroll
A clever way to estimate enormous numbers - Michael Mitchell
Taking a Galactic Census - 60 Second Adventures in Astronomy (13/14)
The danger of a single story | Chimamanda Ngozi Adichie
Is Twitter the Newest Form of Literature? | Idea Channel | PBS Digital Studios
Reasons to Remember Death
Why the shape of your screen matters - Brian Gervase
Moths vs Butterflies
The Science of DOGS
TOP 10 REASONS Why We Know the Earth is Round
Falling in love is the easy part | Mandy Len Catron
Why Do We Have More Boys Than Girls?
Are There Really Insects in Yogurt?
RSA ANIMATE: Left Brain, Right Brain
How a wound heals itself - Sarthak Sinha
Why the Sky is Blue explained in ten seconds
46 Facts About the First Ladies - mental_floss on YouTube (Ep.211)
Gothic Revival: Design in a Nutshell (1/6)
Paul Tudor Jones II: Why we need to rethink capitalism
The Science of Compassion: Kindness Is a Fundamental Human Trait
Why No Giant Mammals?
Exploring other dimensions - Alex Rosenthal and George Zaidan
Does My Dog Know What I'm Thinking?
RSA ANIMATE: The Divided Brain
The Science of Self-Flagellation - Epic Science #103
What is Dark Matter and Dark Energy?
Your Brain is a Library of "Stuff That Works" - College Info Geek
Tim Berners-Lee: The year open data went worldwide
Weird Pregnancy Tests
The Science of Anxiety
Is Minecraft the Ultimate Educational Tool? | Idea Channel | PBS Digital Studios
Are We All Cyborgs?
Can You Survive Only Eating Bacon?
The Science of Sweetness
Why Do We Love Sugar?
Inside your computer - Bettina Bair
Why Does Your Voice Get Higher When You Inhale Helium? - Big Questions (Ep. 11)
Are Invisibility Cloaks Possible?
Why Do We Have Blind Spots?
Elizabeth Blackburn: Great Minds
Why Do We Wear Clothes?
Why Are Vegetarians Annoying? (An Exploration of a Cultural Rift)
Why is College So Expensive?
Asha de Vos: Why you should care about whale poo
Your words may predict your future mental health | Mariano Sigman
Football physics: The "impossible" free kick - Erez Garty
The strengths and weaknesses of acids and bases - George Zaidan and Charles Morton
NEW! - Grammar Hacks: Compliment or complement?
Homer's Odyssey - Thug Notes Summary and Analysis
Neanderthals: Smarter Than You Think
Thomas Jefferson And The Giant Moose
The Persians & Greeks: Crash Course World History #5
Computing a theory of everything | Stephen Wolfram
Why Vaccines Work
To AdBlock, Or Not To Adblock... | Idea Channel | PBS Digital Studios
10 Most Common Questions About Taxes | Money Stuff
The Most Advanced Robots in the World
The Most Important Moment in the History of Life
Entropy: Embrace the Chaos! Crash Course Chemistry #20
Today's Mistakes Are Deadly, with Dan Ariely
4 Ways to Spot a Fake News Story | What the Stuff?!
3 Reasons Mosquitoes Suck
5 Common Myths About Evolution | Mashable
The first secret of great design | Tony Fadell
Climate Change: The View From MinuteEarth | #OursToLose
Misconceptions About Falling Objects
What adults can learn from kids | Adora Svitak
A Brief History of Robotics
How The Elements Got Their Names
Margaret Heffernan: Why it's time to forget the pecking order at work
The Integumentary System, Part 1 - Skin Deep: Crash Course A&P #6
The Hairy Ball Theorem
How to Replace the 10 Commandments