Our European history is going to start around 1500 with the Renaissance, but believe it or not, that is not the actual beginning of history in the continent. So, today, we're going to teach you the broad outlines of the so-called Middle...

Every time you breathe, air travels down the trachea, through a series of channels, and then reaches little clusters of air sacs in the lungs. These tiny sacs facilitate a crucial exchange: allowing oxygen from the air we breathe into...

Learning to talk about chemistry can be like learning a foreign language, but Hank is here to help with some straightforward and simple rules to help you learn to speak Chemistrian like a native.



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Not sleeping for days on end. Long periods of euphoria. Racing thoughts. Grandiose ideas. Mania. Depression. All of these are symptoms of Bipolar Disorder. In this episode of Crash Course Psychology, Hank talks about mood...

What's something pandas, orangutans, rhinos, and gorillas have in common? They're all endangered animals. Join Jessi and Squeaks to learn how an animal becomes endagered and what we can do to help them!

Hank guides us through the process of natural selection, the key mechanism of evolution.

Our journey through the solar system continues, as Jessi gives you a close look at comets and asteroids!

There are all sorts of flying birds, but some of the world's biggest are ones that stick to the ground, like the awesome ostrich!

Purgatorius, a kind of mammal called a plesiadapiform, might've been one of your earliest ancestors. But how did we get from a mouse-sized creature that looked more like a squirrel than a monkey -- to you, a member of Homo sapiens?

There are more insects in the world than any other kind of animal! In this episode of SciShow Kids, Jessi and Squeaks show you how to identify an insect, in three easy steps!

You're in a movie theater, watching the new horror flick. The audience knows something that the main character does not. The audience sees the character's actions are not in his best interest. What's that feeling -- the one that makes...

Amnesia is a really handy/clich_ literary device and the inciting incident for countless Hanna-Barbera cartoons, but it's also a real, serious affliction caused by major head trauma. Learn how scrambled neurons can permanently alter...

What trials unite not only Harry Potter or Frodo Baggins but many of literature's most interesting heroes? And what do ordinary people have in common with these literary heroes? Matthew Winkler takes us step-by-step through the crucial...

New ReviewNew Green MP Hannah Spencer slams 'misinformation' about her in lead up to pollsCredit: Luke Reevey/The Independent

New ReviewIn this video we are going to go over how to determine the other quadrants of the unit circle

New ReviewIn this video we are going to focus on how to find the zeros of a polynomial by factoring to the 5th power

New ReviewHow many times can you factor a polynomial? In this video I will show you how we factor this polynomial three times and we don't expand.

New ReviewLet's explore o to identify the zeros of a polynomial and the multiplicity of those zeros by factoring. Each of these examples we will explore a different factoring technique.

New ReviewLet's do a quick review of adding and subtracting rational expressions. Working through the basics and examples finding the LCD

New ReviewDiscover the five most dangerous foodborne parasites, from sushi worms to brain-infecting tapeworms. Learn how they enter your body, the risks they pose, and simple steps to protect yourself while enjoying your meals safely.

Rear-facing car seats do keep kids safer, but they can be hard to use for larger children. In Sweden, kids stay in backward facing seats a lot longer, and have fewer injuries. The study that encouraged American parents to turn their car...

We've been hearing a lot of pretty general plans to implement Medicare for all Americans. How would that work? Medicare as it exists today has some coverage gaps. How would that be addressed in Medicare for All?

As the vaccine to protect against Covid-19 continues to roll out to more and more people, interest in side effects is high. This can lead to lots of media coverage when people experience side effects, particularly when serious side...

Stents are a popular treatment for angina pectoris, or chest pain usually resulting from narrowed arteries. Getting a stent is a serious procedure, with no small risk associated with it. And recent studies indicate that stents don't do...