TED-Ed
TED-Ed: Where did Earth's water come from? - Zachary Metz
Water covers over 70% of the Earth, cycling from the oceans and rivers to the clouds and back again. It even makes up about 60% of our bodies. But in the rest of the solar system, liquid water is almost impossible to find. So how did our...
SciShow
Are Colors Real?
The sky is blue, but according to whom? Could the rules of our language affect the way we perceive color?
Crash Course
Animal Development: We're Just Tubes - Crash Course Biology
Hank discusses the process by which organisms grow and develop, maintaining that, in the end, we're all just tubes.
SciShow
Does Birth Order Affect Your Personality?
I bet you've heard about the birth order cliche: The oldest child is responsible, the middle one is a rebel, and the youngest is spoiled. This stereotype might apply to you and your siblings, but is it universal?
SciShow
Victorian Pseudosciences: Brain Personality Maps
in 19th-century England, scientists were figuring out that certain parts of our brains were connected with certain parts of our bodies- but they came up with some terrible and misleading ideas that spread without rigorous scientific...
SciShow
Sprites, Jets, and Glowing Balls: The Science of Lightning
Ever wonder how lightning works? Scientists are still figuring it out, but what we do know is fascinating. Learn about positive and negative lightning, red sprites, blue jets, and ball lightning in this episode of SciShow!
TED-Ed
TED-Ed: How friendship affects your brain | Shannon Odell
If it seems like friendships formed in adolescence are particularly special, that's because they are. Childhood, adolescent, and adult friendships all manifest differently in part because the brain works in different ways at those stages...
Crash Course
Population, Sustainability, and Malthus: Crash Course World History 215
In which John Green teaches you about population. So, how many people can reasonably live on the Earth? Thomas Malthus got it totally wrong in the 19th century, but for some reason, he keeps coming up when we talk about population. In...
Crash Course
Plato and Aristotle: Crash Course History of Science
Plato and Aristotle: Crash Course History of Science #3
SciShow
Common Misconceptions About Evolution
Evolution is particularly vulnerable to misunderstandings around the scientific language. SciShow clears up some confusing language!
Crash Course
Evolution: It's a Thing - Crash Course Biology
Hank gets real with us in a discussion of evolution - it's a thing, not a debate. Gene distribution changes over time, across successive generations, to give rise to diversity at every level of biological organization.
Curated Video
Rama and the Ramayana: Crash Course World Mythology
The next entry in our parade of heroes is Rama, the protagonist of the Ramayana, one of India's oldest stories. We're going to be talking about Rama's importance to Hindu culture, and how Rama fits into Campbell's idea of the Hero's...
PBS
What are the Strings in String Theory?
Why strings? What are they made of? How did physicists even come up with this bizarre idea? And what's all this nonsense of extra dimensions?
SciShow
The Experiment That May Have Broken Physics | SciShow News
Researchers have made some unexpected readings of mysterious particles called muons, which may make us reexamine the Standard Model in physics.
Crash Course
Genetics and The Modern Synthesis: Crash Course History of Science
Remember how Darwin and Mendel lived around the same time, but everyone forgot about Mendel until 1900, and even then biologists saw Darwinism and Mendelism as two competing grand theories about how life works? Well, in this episode of...
Crash Course
Micro-Biology: Crash Course History of Science
It's all about the SUPER TINY in this episode of Crash Course: History of Science. In it, Hank Green talks about germ theory, John Snow (the other one), pasteurization, and why following our senses isn't always the worst idea.
Crash Course
Earth Science: Crash Course History of Science
It's Earth Science time!!!! In this field, natural philosophers were asking questions like, what’s up with fossils? Are they the remains of extinct organisms? Or are they so-called “sports of nature”—rocks that just happen to look like...
Crash Course
Biology Before Darwin: Crash Course History of Science
You’ve probably heard of Charles Darwin, but before we get to him, you really need to understand how different people, throughout the seventeenth and eighteenth centuries, tried to answer the same question: “what is life?”
Crash Course
Darwin and Natural Selection: Crash Course History of Science
"Survival of the Fittest" sounds like a great WWE show but today we're talking about that phrase as it relates to Charles Darwin and Alfred Wallace. Darwin and Wallace are at the heart of understanding evolution and natural selection....
Crash Course
Theories of Myth: Crash Course World Mythology
This week, we're talking about theories of Myth. We'll look at the different ways mythology has been studied in the last couple of millenia, and talk about the diffeent ways people have interpreted myth, academically.
PBS
Making Probability Mathematical
What happened when a gambler asked for help from a mathematician? The formal study of Probability.
TED-Ed
TED-Ed: The meaning of life according to Simone de Beauvoir - Iseult Gillespie
At the age of 21, Simone de Beauvoir became the youngest person to take the philosophy exams at France’s most esteemed university. But as soon as she mastered the rules of philosophy, she wanted to break them. Her desire to explore the...
SciShow
What Really Killed the Dinosaurs
What wiped out the dinosaurs? Most of us were taught it was a killer asteroid—which is true. But it turns out there was more than one disaster movie playing at the cineplex that was Earth 66 million years ago.
Crash Course
Thespis, Athens, and The Origins of Greek Drama: Crash Course Theater #2
This week on Crash Course Theater, Mike is acting like theater started in Greece. Well, for the western theater, this is true. The earliest recorded drama in the west arose in Athen, and these early plays grew out or religious ritual....