TED-Ed
TED-Ed: The mathematical secrets of Pascal's triangle - Wajdi Mohamed Ratemi
Pascal's triangle, which at first may just look like a neatly arranged stack of numbers, is actually a mathematical treasure trove. But what about it has so intrigued mathematicians the world over? Wajdi Mohamed Ratemi shows how Pascal's...
TED Talks
TED: Can democracy exist without trust? | Ivan Krastev
It seems the more we know about how democracy works -- through government transparency, better media coverage, even new insights about our brains -- the less we trust democracy itself. Yet it's still, arguably, the best system of...
TED Talks
Brené Brown: The power of vulnerability
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...
SciShow
5 Things Your Nails Can Say About Your Health
Your nails can do more than just look pretty. They can tell you some things about your health!
Bozeman Science
Redox Reactions
In this video Paul Andersen explains how redox reactions are driven by the movement of electrons from the substance that is oxidized to the substance that is reduced. Oxidation is the loss of electrons and reduction is the gaining of...
Bozeman Science
Signal Transmission and Gene Expression
Paul Andersen explains how signal transmission is used to alter both cellular function and gene expression. He uses the example of epinephrine release in humans and how it is used in the fight or flight response. Epinephrine causes liver...
Bozeman Science
Electric Field of a Dipole
In this video Paul Andersen explains how vector addition can be used to determine the electric field of a dipole.
SciShow
Why Body Hair?
In today's episode Hank talks about hair: What's it good for, what's it made of, and why do we have less than other mammals?
Crash Course
Great Glands - Your Endocrine System: CrashCourse Biology
Hank fills us in on the endocrine system - the system of glands which produce and secrete different types of hormones directly into the bloodstream to regulate the body's growth, metabolism, and sexual development & function.
Bozeman Science
Water: A Polar Molecule
In this video Paul Andersen explains how the polarity of water makes life on the planet possible. Oxygen is highly electronegative and pulls the electrons closely creating a partial negative charge. The polarity of water (and the...
Crash Course
Screenplays: Crash Course Film Production
If you want to make a movie, generally you're going to want to start with a script. In this episode of Crash Course Film Production, Lily Gladstone talks about the basics of screenplays and how to get started thinking about and actually...
Bozeman Science
Homeostatic Disruptions
Paul Andersen explains how disruptions in homeostasis can affect biological systems at all levels. He uses the example of dehydration in animals to explain how disruptions at the cellular level can affect an organism. He also uses the...
Crash Course
The Video Game Crash of 1983: Crash Course Games
So the 1980s was the golden age of arcade games. Games like Donkey Kong, Pac- Man, Space Invaders, and Centipede had become a cultural phenomenon. These games had expanded the gamer demographic and even encouraged the rise of competitive...
SciShow Kids
The Fastest Sled Ride Ever!
It snowed last night where Jessi and Squeaks live, so this morning they tried to go sledding, but they didn't end up going fast or very far. Can you help them figure out what they can do to get their sled zipping down the hill?
Bozeman Science
Conservation of Electric Charge
In this video Paul Andersen explains how the conservation of charge applies to objects in a system. When a charged object induces charge or conducts charge to a neutral object the net total of charge will not change. Grounding allows...
Bozeman Science
Life Requires Free Energy
Paul Andersen describes how free energy is used by organisms to grow, maintain order, and reproduce. A brief discussion of the first and second law of thermodynamics is also included. Disruptions in the amount of free energy can cause...
Bozeman Science
Wave Period and Frequency
In this video Paul Andersen explains how the period is the time between wave and the frequency is the number of waves per second. Period is measured in seconds and frequency is measured in Hertz. Wave period and wave frequency are...
TED Talks
Rosalind Picard: An AI smartwatch that detects seizures
Every year worldwide, more than 50,000 otherwise healthy people with epilepsy suddenly die -- a condition known as SUDEP. These deaths may be largely preventable, says AI researcher Rosalind Picard. Learn how Picard helped develop a...
TED Talks
TED: How to talk (and listen) to transgender people | Jackson Bird
Gender should be the least remarkable thing about someone, but transgender people are still too often misunderstood. To help those who are scared to ask questions or nervous about saying the wrong thing, Jackson Bird shares a few ways to...
SciShow Kids
All About Sneezes!
It’s cleaning day at the fort, and all that dust is making us sneeze! But have you ever wondered why we sneeze in the first place? Discover how your body uses mucus and sneezes to keep out the bad stuff and help you stay healthy!
SciShow
An Asteroid Flyby, and Good Morning, New Horizons!
This week in SciShow Space News we bring you the latest on what to expect from NASA's New Horizons deep space mission and what asteroids to watch for in the coming years!
SciShow
Why Does Humidity Make It Feel Hotter?
It turns out there's a scientific explanation behind the saying, "It's not the heat, it's the humidity!" Learn why a hot and humid day feels so dismal and some tips to avoid the really sweaty, gross days on today's Quick Question!
Bozeman Science
Magnetic Domains
In this video Paul Andersen explains how magnetic domains act as tiny magnets within ferromagnetic material.
Bozeman Science
Spacetime
In this video Paul Andersen explains how the dimensions of space and time are combined in relativistic mechanics. Gravity and velocity can affect both space and time according to Albert Einstein's Special Law of Relativity.