Could we have a possible 9th Planet? Hank Green tells us what we think we know with this elusive object.

There are facts, there are opinions, and there are lies, says historian Deborah Lipstadt, telling the remarkable story of her research into Holocaust deniers -- and their deliberate distortion of history. Lipstadt encourages us all to go...

We continue our look at philosophical reasoning by introducing two more types: induction and abduction. Hank explains their strengths and weaknesses, as well as counterarguments and the Socratic method.

Paul Andersen explains how eukaryotic cells were formed through a process of endosymbiosis. He describes how aerobic bacteria became mitochondria and cyanobacteria became chloroplasts. He mentions an example of symbiosis that occurs...

Today we're going to talk about p-hacking (also called data dredging or data fishing). P-hacking is when data is analyzed to find patterns that produce statistically significant results, even if there really isn't an underlying effect,...

Imagine you swallowed a small bird and suddenly gained the ability to fly - or you ate a cobra and were able to spit poisonous venom! Well, throughout the history of life (and specifically during the evolution of complex eukaryotic...

In this video Paul Andersen explains in more detail the history of the Earth. He shows how the history of the Earth is written in the rocks that are built up over time. Fossils allow us to compare different rock layers relative to one...

Researchers think a planet-wide groundwater system may have once existed on Mars, and SpaceX launched the very first commercial crew capsule which docked on the International Space Station!

What puts the “science” in social science? Today we’ll explore positivist sociology and how sociologists use empirical evidence to explore questions about the social world. We’ll also introduce two alternatives: interpretative sociology...

In this video Paul Andersen explains the nature of science. He describes how science is a way of knowing about the natural world. Scientists develop investigations to gather evidence and make explanations about how the natural world...

Over the years, lots of explanations have been proposed as the origin of Stonehenge, including lost technologies, outright magic, and — of course — aliens. What do we actually know about this prehistoric mystery?

Now that you have a solid understanding of the media landscape, it’s time to equip you with the essential skills for navigating it.

In which John Green returns to teaching World History! This week, we'll be talking about the idea of civilization, some of the traditional hallmarks of so-called civilization, and why some people would choose to live outside the...

In this video Paul Andersen explains how the CER framework can be used to give explanations in a science classroom. In order to make a complete explanation a Claim must be supported by Evidence and Reasoning connecting the evidence to...

There are many different approaches to modern yoga— though most forms have three core elements: physical postures, breathing exercises, and spiritual contemplation.This blend of physical and mental exercise is widely believed to have a...

Left vs Right

The fourth planet from the sun and the outermost of the terrestrial planets, Mars has long been a popular spot for missions and imagination. Phil walks you through the planet's topography, core, and features. We'll take a look back to...

Carl Hart, a professor of psychology and psychiatry at Columbia University, studies how drugs affect the brain and behavior. His research focuses on debunking common myths about drugs, such as the false belief that substances like crack...

This video explains how to use clues to identify the speaker of a poem.

A video titled "Limited Inferences" which analyzes making inferences and references Romanticism, Realism, and dramatic monologue.

This video defines epiphany as well as claim.

This video is about analyzing multiple arguments.

A video titled "Responding to a Prompt" that explains how to effectively respond to a writing prompt.

A video titled "Developing an Argument" which instructs develop an argument for a persuasive essay.