The myth of Thor's journey to the land of giants - Scott A. Mellor
Adults History
Religion
Thor - son of Odin, god of thunder, and protector of mankind - struggled mightily against his greatest challenge yet: opening a bag of food.
Why Are There As Many Males As Females?
Adults Animals
Biology
Nature
In almost every animal species on Earth, equal numbers of males and females are conceived. Why is that?
What it Feels Like to Slide Downhill at 90 M.P.H.
Adults Human
Sports
John Daly is an American skeleton racer and a two-time Olympic athlete. Sliding face-down, head-first on a slick bobsled track at 90 mph might sound insane, but for Daly, it's the thrill that keeps him coming back.
Havana - Pentatonix
Adults Art
Music
Pentatonix is an American a cappella group from Arlington, Texas, consisting of vocalists Scott Hoying, Mitch Grassi, Kirstin Maldonado, Kevin Olusola and Matt Sallee.
What Is The Most Dangerous Sport In The World?
Adults Health
Sports
With the Olympics wrapping up, we wondered: what is the most dangerous sport?!
What Is Light?
Adults Science
Travel
We are so used to some things that we stopped wondering about them. Like light. What is light? Some kind of wavy thing, right? Kind of.
10 Strangest Mysteries That Remain Unsolved
Adults History
World
What do you think happened?
We Asked Bill Gates: Do You Need To Be Rich To Be Healthy?
Adults Economy
Health
Society
This video is in collaboration with Bill and Melinda Gates. You can check out the Gates Annual Letter here: http://b-gat.es/2Cfph0j
The coin flip conundrum - Po-Shen Loh
Adults History
Math
When you flip a coin to make a decision, there's an equal chance of getting heads and tails.
NEW Gravitational Wave Discovery!
Adults Science
Space
Scientists have JUST published this new observation.
How Evolution works
Adults Biology
Genetics
History
The theory of evolution explains how the enormous variety of life could come into existence. How it is possible for primitive life forms to spawn the millions of different creatures, that exist today.
The rise and fall of the Inca empire
Adults History
Society
It was the western hemisphere's largest empire ever, with a population of nearly 10 million subjects.
Why Electroshock Therapy Is Back
Adults Health
Mental Health
Technology
Shocking the brain has come and gone as a medical treatment, but it's currently resurging, as it often provides the best form of relief for severe depression and advanced Parkinson's disease.
Why Our Favorite Crops Live Fast and Die Young
Adults Ecology
Industry
We mostly grow annual plants because they reliably produce energy-rich seeds, which we like to eat.
How did teeth evolve? - Peter S. Ungar
Adults Biology
Health
Human
You may take them for granted, but your teeth are a marvel. They break up all your food over the course of your life, while being strong enough to withstand breakage themselves. How do they do it?
Why Alien Life Would be our Doom - The Great Filter
Adults Science
Space
Travel
Finding alien life on a distant planet would be amazing news - or would it? If we are not the only intelligent life in the universe, this probably means our days are numbered and doom is certain.