Hank describes some of the best explanations that neurologists have come up with to account for the strange sensation we know as déjà vu.

Planarians are flatworms most known for being able to grow a new head if it gets cut off, but perhaps even stranger is the fact that their new head retains some of the memories from the old one. Hosted by: Michel Aranda

Turns out, two atomic clocks are indeed better than one. And what role does sleep play in memory suppression?

SciShow explores a newly identified neurological condition, aphantasia, the inability to visualize things in your imagination, and gives tribute to Dr. Oliver Sacks, popular explorer of the human mind.

Hank explains the science behind the effects of that wackiest of weeds, cannabis sativa - aka marijuana.

Sheryl Lee Ralph is a force, delivering iconic performances both on stage and screen. But she didn't always know if she'd make it big. In a lively talk sparkling with actionable advice, she shares how her struggles taught her what it...

Using found materials and mesmerizing structures that unearth deep-rooted emotions, Wangechi Mutu's visual creations celebrate our collective history and explore how art communicates into the future. From ancient rock carvings in the...

Lots of people talk about the need to be physically fit, but mentally fit? Not as much. In a powerful talk, mental health advocate Gus Worland shares how an experience of deep grief from his own life sparked his mission to advocate for...

After visiting Sam the Bat in his family’s cave, Squeaks is learning all about the rock icicles that are growing from the ceiling and the floor in the cave!

What do we say to kids when intensely traumatic events interrupt everyday life? Whether you're a teacher, parent or community builder, educator Kristen Nguyen provides three research-backed steps for navigating these difficult...

Youth leader Shreya Joshi diagnoses a key source of political polarization in the US and shows why having "uncomfortable conversations" with people you disagree with is crucial to bridging the divide. "When we are able to recognize what...

Restaurateur Will Guidara's life changed when he decided to serve a two-dollar hot dog in his fancy four-star restaurant, creating a personalized experience for some out-of-town customers craving authentic New York City street food. The...

John Green is teaching history again. This time, we're looking at the history of Europe in 50 episodes. We'll start at the tail end of the so called Middle Ages, and look at how Europe's place in the world has developed and changed in...

In this video Paul Andersen explains how atoms are conserved in a chemical reaction. This can be seen in a chemical equation where the subscripts represent the atoms in the molecule and the coefficients represent the molecules. The...

Paul Andersen introduces the concept of bioenergetics. He explains how living organisms utilize free energy in the Universe. He begins with a brief discussion of thermodynamics and Gibbs free energy. He then explains how reactions can...

Paul Andersen explains the importance role of coupled reactions in biology. He starts by explaining how the power of a river can be harnessed by a water mill to grind grains. He describes the importance of ATP and how it is used within...

Classical computers struggle to crack modern encryption. But quantum computers using Shor's Algorithm make short work of RSA cryptography. Find out how.

A solution to the puzzle involving two blocks, sliding fricionlessly, where the number of collisions mysteriously computes pi

In this video Paul Andersen explains the importance of models and visual representations in an AP Biology class. Science practices are overarching skills and knowledge required to be successful in an AP Biology classroom. Models for...

Paul Andersen explains how to use mathematics appropriately. He begins by emphasizing the important role that mathematics plays in the life sciences today and in that the future. He describes important mathematical equations in each of...

This week on Crash Course mythology, Mike is talking to you about floods. You may have heard the story of Noah and the Ark from the Bible, but that is not the only deluge story humans tell. It's a common thing across culture. You could...

Today we conclude our unit on Philosophy of Religion and Hank gets a little help from Indiana Jones to explain religious pragmatism and Pascal’s Wager, fideism, and Kierkegaard’s leap to faith.

In this video Paul Andersen explains hot the force-time graph can be used to determine the impulse of an object. Since the impulse and the change in momentum are equivalent the graph can also be used to determine the change in momentum...

Did you know that bees can remember things? It's true, and it's thanks to Dr. Charles Henry Turner that we know so much about insects!