MinuteEarth
How Many Mass Extinctions Have There Been?
Want to learn more about the topic in this week's video? Here are some keywords/phrases to get your googling started: - Mass Extinction Event: a significant, global decrease in the diversity of life - "Big 5": The five biggest mass...
MinuteEarth
How Fighting Wildfires Makes Them Worse
Today's wildfires burn, on average, twice the amount of land they did in 1970. The reason? We've been working too hard to put them out. Want to learn more about the topic in this week's video? Here's a keyword/phrase to get your googling...
MinuteEarth
How Do Trees Survive Winter?
Humans can go inside or put on clothes, but trees spend winter naked in the cold. Why don't they all die?
MinuteEarth
DemDebate Secret Video - What The U.S. Promised in Paris
NBC & YouTube actually asked us to make TWO videos for the Democratic Presidential Debate on January 17th, 2016. Here's the video that DIDN'T get shown at the debate. Want to learn more about the topic in this week's video? Here are some...
MinuteEarth
400 Parts in a Million - The World's Biggest Experiment
400 Parts in a Million - The World's Biggest Experiment
MinuteEarth
Where Did Earth's Water Come From?
Earth didn't have water when it formed, but it does now! How did it get wet?
Be Smart
This Land Is Your Land - Project For Awesome 2016
About the importance of the National Parks Foundation.
Crash Course
How World War I Started: Crash Course World History 209
In which John Green teaches you about World War I and how it got started. Crash Course doesn't usually talk much about dates, but the way that things unfolded in July and August of 1914 are kind of important to understanding the Great...
Crash Course Kids
Weather vs. Climate
So we have Weather and Climate... but are they the same thing? No, no they are not. But they are both super important to how the geosphere is shaped. In this episode of Crash Course Kids, Sabrina chats with us about the differences...
Crash Course Kids
Severe Weather
So, what's the difference between 'weather' and 'severe weather'? Is it just how hard the wind is blowing? Is it just thunder and lighting? Well, it can be some or all of those things. In this episode of Crash Course Kids, Sabrina talks...
Bozeman Science
The Hierarchy of Life
Paul Andersen explains how biology is ordered in the hierarchy of life. He first of all describes how emergent properties appear as you move to more inclusive systems. The then describes life at the following levels; atom, molecule,...
MinutePhysics
Magnets: How Do They Work?
How do magnets work? Why do they attract and repel at long distances? Is it magic? No... it's quantum mechanics, and a bit more, as we explain in this, the longest MinutePhysics video ever.
MinutePhysics
Immovable Object vs. Unstoppable Force - Which Wins
Immovable Object vs. Unstoppable Force - Which Wins
MinutePhysics
How to Turn Sound Into Light - Sonoluminescence
How to Turn Sound Into Light - Sonoluminescence
SciShow
10 Discoveries Made in National Parks
You might think of national parks as a nice place to see a geyser, or a big ol’ canyon, but over the past 100 years, US national parks have produced some of the biggest, oldest, deepest, and creepiest discoveries that have been made in...
Crash Course
Let's Talk About Sex: Crash Course Psychology
Sex is complicated for different reasons in different cultures. But, it's the entire purpose of life, so there's no reason to blush. In this episode of Crash Course Psychology, Hank talks about Kinsey, Masters and Johnson, Sexuality,...
Crash Course
Who Started World War I: Crash Course World History 210
In which John Green teaches you WHY World War I started. Or tries to anyway. With this kind of thing, it's kind of hard to assign blame to any one of the nations involved. Did the fault lie with Austria-Hungary? Germany? Russia? Julius...