In which you are introduced to the life and accomplishments of Alexander the Great, his empire, his horse Bucephalus, the empires that came after him, and the idea of Greatness. Is greatness a question of accomplishment, of impact, or...

From 1932 to 1972, the United States Public Health Service and the Centers for Disease Control and Prevention operated an extremely unethical medical experiment on the effects of outcomes of untreated syphilis. Hundreds of poor Black men...

Some might call sand coarse, rough and irritating, but there’s no denying that it’s used everywhere: from glass to asphalt, sand is a key ingredient for all sorts of materials in construction and technology. But this heavy reliance on...

HEPA filters are the basis of modern filtration - but they also represent a straight line from the Manhattan Project to your living room!

Renewable energy may be the way of the future, but in order to store that energy to make our grids more sustainable, we might need to take a look back at some battery technologies of the past.

A lot of robots are developed to physically replicate our actions and behavior, like a bipedal, balanced walk, a large range of motion, and the ability to perceive and interact with the environment. But, maybe not to your surprise,...

Fast food was invented to help us keep up with our fast-paced world. But it’s also had some unintended psychological consequences and can influence our choices in situations that don’t have anything to do with food.

You probably know not to lick something unfamiliar. But there are actually a surprising number of discoveries that have been made because scientists licked things.

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Russia went and had a revolution in 1917 and cinema was a big part of its aftermath. Even though film stock was hard to come by, we saw the first film school started, and the study of film became hugely important. Russian filmmakers...

Francis Ford Coppola's "Apocalypse Now" is a different kind of war movie. It's a multi-genre film that maybe says more about human psychology than it does about war. In this episode of Crash Course Film Criticism, Michael Aranda takes us...

Hank tells us about two interesting new studies that explore the brain and its interaction with drugs, investigating how cannabinoids can repress fear, and bringing forth a possible vaccine for cocaine addiction.

A meteor shower happens when rocks from space burn up in the atmosphere and make a beautiful light show! Lately, though, Squeaks has been wondering what would happen if one of those space rocks made it through the atmosphere to the...

Supply chain challenges are real, but they're not new, says global trade expert Dustin Burke. In the face of disruptions ranging from natural disasters to pandemics, how do we make sure supply chains can keep up? Burke offers a...

You can't open up a magazine without seeing someone with impossibly smooth skin selling some sort of "anti-aging" cream, but could some of these products actually work?

It's really difficult for life to create blue pigments, but the color can appear in a handful of compounds that create just the right conditions to reflect blue photons.

In 1968, Dr. Robert Ho Man Kwok felt ill after dinner at a Chinese restaurant and wrote a letter to a medical journal connecting his symptoms to MSG. His letter would change the world's relationship with MSG, inspiring international...

Fairness is one of the quickest ways to lose or gain trust. A lot of times we assume unfair people are incompetent or opportunistic. In this episode, Evelyn chats about how we perceive fairness and what the hurdles are to being "fair" in...

Negative campaigns—or campaigns that work by painting opposing candidates in a negative light—have been used for decades. But today, thanks to information that can be gained from social media, these campaigns may be even more effective...

Humans aren’t the only ones who have to worry about epidemics: meet six other animals who take their own precautions to avoid getting sick!

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Why do we cry? It's weird. Humans leak water out of their faces when they get sad. Are we the only animals that do this? What does it mean? What is it for? Here's the science of human tears!

In this video Paul Andersen defines Q10 as the ratio between reactions at different temperatures. He then gives you an example of how it could be calculated. He also includes extensions of other scientific phenomenon that could created...

SciShow heads to Washington D.C. to join the March for Science and interview people about why they feel science is important to them.

Today on SciShow News we talk about a new research effort that is aiming to revolutionize how we treat disease. We also discuss the video where Boston Dynamics shows off it's new version of the Atlas robot by using a hockey stick to mess...

These animals can detect heat through some fascinating biological mechanisms, and they are proving to be boons to the scientific community.