Many animals use the same five senses as we do, but these creatures take that beyond the next level.

Imitating nature to build a better (or possibly more terrifying) future. We've been trying to build flapping-wing robots for hundreds of years, and now, ornithopters are finally being developed, and may be used mostly for military...

Let’s face it: humans stink! But that’s not always a bad thing - we use smells to interact with each other and navigate our lives. Hosted by: Hank Green

From menstrual cycles to rainfall, there are lots of claims about the moon's influence. In today's episode, Hank is here to set the record straight with 8 myths & facts about our moon.

Cats are known for having fantastic night vision, but why is it during the day my cats can't see the treat that I'm putting right in front of them?

Mister Brown and Squeaks are visiting Sam the Bat's family in their cave! Now, animals that live in caves are pretty special. Since caves are really dark, the animals that live there can't use eyes to see where they are going, so they...

Get ready to get weird. Mike Rugnetta teaches you about the Theater of the Absurd, a 1950s theatrical reaction to the dire world events of the 1940s. You'll learn about Jean Genet, Eugene Ionesco, Samuel Beckett, and the theatrical...

People can be enthusiastic about their interests, but where does that enthusiasm come from? This compilation explores the psychology behind why humans love the things we love.

Are the five senses really all that we use to take in the world around us, or is it a little more complex than that, with psychology playing a more prominent role than you might have thought?

If you think social media is powerful, keep an eye on immersive video games, says futurist Noah Raford. As more and more people are drawn into gaming and virtual worlds, the communities they forge are spawning real-world social...

What if leadership at work wasn't for a select few, but rather shared among many? Management consultant Gitte Frederiksen gives us the recipe for "distributed leadership" -- dynamic, multidimensional networks of leaders that tap into...

Our memories and bodies give us clues about who we are, but what happens when this guidance shifts? In this mind-bending talk, science writer Anil Ananthaswamy shares how the experiences of "altered selves" -- resulting from...

Despite common belief, retirement takes more than financial planning. And while you may be beyond ready to go on permanent vacation, you also have to psychologically prepare for when the novelty wears off. Riley Moynes explains the four...

An introduction to group theory, and the monster group.

What is the derivative of a^x? Why is e^x its own derivative? This video shows how to think about the rule for differentiating exponential functions.

In which John Green talks about the many revolutions of Latin America in the 19th century. At the beginning of the 1800s, Latin America was firmly under the control of Spain and Portugal. The revolutionary zeal that had recently created...

You may think you know all about hypnosis from the movies. Zoolander, The Manchurian Candidate, etc... but there's a whole lot more going on. In this episode of Crash Course Psychology, Hank tells us about some of the many altered states...

What is the derivative of a^x? Why is e^x its own derivative? This video shows how to think about the rule for differentiating exponential functions.

In this episode of Crash Course Psychology, we get to meet the brain. Hank talks us through the Central Nervous System, the ancestral structures of the brain, the limbic system, and new structures of the brain. Plus, what does...

Derivatives are about slope, and integration is about area. These ideas seem completely different, so why are they inverses?

Euler's formula, e^{pi i} = -1, is one of the most famous expressions in math, but why on earth is this true? A few perspectives from the field of group theory can make this formula a bit more intuitive.

What exactly are fractals? A common misconception is that they are shapes which look exactly like themselves when you zoom in. In fact, the definition has something to do with the idea of "fractal dimension".

What exactly are fractals? A common misconception is that they are shapes which look exactly like themselves when you zoom in. In fact, the definition has something to do with the idea of "fractal dimension".

Mike Rugnetta is going to tell you stories of death, destruction, divine judgment, damnation, and the occasional happy ending. That's right, this week we're talking about the Apocalypse. Actually we're talking about a bunch of ways the...