Crash Course
Nuclear Chemistry: Crash Course Chemistry
In this episode, Hank welcomes you to the new age, to the new age, welcome to the new age. Here he'll talk about transmutation among elements, isotopes, calculating half-life, radioactive decay, and spontaneous fission. -- Table of...
SciShow
5 Periodic Tables We Don't Use (And One We Do)
From Mendeleev’s original design to physicist-favorite “left-step” rendition, the periodic table of elements has gone through many iterations since it was first used to organize elements 150 years ago - each with its own useful insights...
SciShow
4 Ways to Date an Archaeological Site
From wasps nests to nuclear reactors. Here are just a few clever ways archeologists figure out how old something is.
SciShow
6 Gems and Minerals Much Rarer (and Cooler) Than Diamonds
No offense to that rock you may have on your finger, but these gems and minerals are so hard to find, they put most diamonds to shame.
Crash Course
The Periodic Table: Crash Course Chemistry
Hank gives us a tour of the most important table ever, including the life story of the obsessive man who championed it, Dmitri Mendeleev. The periodic table of elements is a concise, information-dense catalog of all of the different...
MinuteEarth
The Bird Poop That Changed The World
Thanks to my grandmother for inspiring this story, and to my mother for helping make it. Bird poop was the gateway fertilizer that turned humanity onto the imported-chemical-based farming system of modern agriculture....
Crash Course
What Is Organic Chemistry - Crash Course Organic Chemistry
Organic chemistry is pretty much everywhere! In this episode of Crash Course Organic Chemistry, we’re talking about the amazing diversity among organic molecules. We’ll learn about the origins of organic chemistry, how to write Lewis...
TED-Ed
TED-ED: The myth behind the Chinese zodiac - Megan Campisi and Pen-Pen Chen
What's your sign? In Western astrology, it's a constellation determined by when your birthday falls in the calendar. But according to the Chinese zodiac (__), it's your shuxiang, meaning the animal assigned to your birth year. And of the...
Bozeman Science
Atoms and the Periodic Table
Mr. Andersen describes atomic structure and tours the periodic table.
SciShow
Zombie Apocalypse?
Hank addresses recent news items that point toward a so-called "zombie apocalypse," and introduces us to some new additions to the periodic table.
TED-Ed
TED-Ed: Euclid's puzzling parallel postulate - Jeff Dekofsky
Euclid, known as the "Father of Geometry," developed several of modern geometry's most enduring theorems--but what can we make of his mysterious fifth postulate, the parallel postulate? Jeff Dekofsky shows us how mathematical minds have...
Crash Course
Stars
Today Phil’s explaining the stars and how they can be categorized using their spectra. Together with their distance, this provides a wealth of information about them including their luminosity, size, and temperature. The HR diagram plots...
Crash Course
The Creation of Chemistry - The Fundamental Laws: Crash Course Chemistry
Today's Crash Course Chemistry takes a historical perspective on the creation of the science, which didn't really exist until a super-smart, super-wealthy Frenchman put the puzzle pieces together - Hank tells the story of how we went...
TED Talks
TED: How to grow a forest in your backyard | Shubhendu Sharma
Forests don't have to be far-flung nature reserves, isolated from human life. Instead, we can grow them right where we are -- even in cities. eco-entrepreneur and TED Fellow Shubhendu Sharma grows ultra-dense, biodiverse mini-forests of...
PBS
Is Community a Postmodern Masterpiece?
Though the TV show Community has never achieved huge ratings, it has a passionate cult following, including us here at Idea Channel. The show plays with genre and narrative in such a creative way that it brings to mind the cultural and...
PBS
Defining Infinity
Set theory is supposed to be a foundation of all of mathematics. How does it handle infinity?
Crash Course
The Sun & The Earth: Crash Course Big History
In which John Green, Hank Green, and Emily Graslie teach you about our Sun, and the formation of the planets. We're going to focus on the formation and development of the Earth, because that's where people live. You'll learn about the...
Crash Course
The Hero's Journey and the Monomyth: Crash Course World Mythology
Let's get Heroic with Mike Rugnetta. This week on Crash Course World Mythology, we're talking about the Hero's Journey and the Monomyth, as described by Joseph Campbell. Campbell's theories about the shared qualities of human story...
Bozeman Science
Electric Circuits
In this video Paul Andersen explains how electric circuits contain different elements which can be connected in series or in parallel. The following four elements are explained in detail; emf, resistor, capacitor, and switch. The voltage...
Bozeman Science
Elements and Molecules
In this video Paul Andersen explains how elements and molecules are made of atoms. In a pure sample of a pure substance the average mass remains the same. If more than one atom is found in a molecule the ration of average masses remains...
Crash Course Kids
What On Earth
We've already talked about how the Earth is divided into four spheres (The Hydrosphere, the Biosphere, the Geosphere, and the Atmosphere). But, how do these different sphere interact with each other? In this episode of Crash Course Kids,...
Curated Video
Using ROMAN NUMERALS to name Ionic Compounds w/ a Transition Metal in Chemistry!
Transition metals are elements in the d orbital. The reason these are unique is that they do not have 1 set charge they become when they become an ion like elements in the s and p orbital. Elements in the d orbital, or our transition...