In which Stan Muller subs for John Green and teaches you about energy and humanity. Today we discuss the ideas put forth by Alfred Crosby in his book, Children of the Sun. Historically, almost all of the energy that humans use has been...

Want a Pineapple? If you want a pineapple, it's possible you can just run down to the store and get one. But, if you wanted to grow one, that's a lot more difficult depending on where you live. In this episode of Crash Course Kids,...

This video description is brought to you by language. But how long have humans been able to use our gift of gab? The answer is a lot more complicated than you might think. From studying fossil brains and ear bones to DNA migration...

There's one human innovation that's so critical to our lives that every modern human group seems to have it. And you probably have some in your craft drawer - it's glue! Turns out there's a long history of glue-making that cements it as...

Squeaks is back from his trip around the world! In this episode, he and Jessi discuss the first stop on his trip: Yellowstone National Park.

Around 6,000 years ago, in the Sahel region of Africa, a lone female mosquito buzzed through the lush, green savannah. She couldn’t know it, but the planet itself was about to change in ways that would see her descendants evolve to live...

When did practicing medicine - in its varied, complex forms (from sharing medicinal plants to the earliest surgeries) - become something that we actually started doing? While it’s a hard question to answer, it’s possible that our...

How did such a strange plant like cannabis come to be in the first place? When and where did we first domesticate it? And why oh why does it get us high?

It would take decades for paleontologists to realize that maybe there wasn’t just one so-called "cradle of humankind," and realize that maybe they’d been asking the wrong question all along.

Nature has had to come up with some crazy ways to survive harsh winters. But none are weirder than hibernation. Turns out there is more than one kind of hibernation, and studying all these ways that life slows down in the cold might help...

Have you ever wondered where giant beasties of folklore, like the chupacabra, came from? Not every mythological creature has a scientific explanation, but here are a few that might.<b<br/>r/>

Hosted by: Reid Reimers (he/him)

Sometimes, humans invent a technology that changes the game. From ancient hand axes to gunpowder, here are 6 weapons that changed the course of human history.<b<br/>r/>

Hosted by: Reid Reimers (he/him)

In the history of space travel, there are a few famous animal astronauts (or cosmonauts), like Laika the dog and Ham the chimpanzee. But you might not have heard of Félicette, who in 1963 became the first -- and so far only -- cat to...

What’s a human? And how did we become humans, anyway? In this episode of Crash Course Biology, we’ll meet some of our closest relatives and trace how we evolved into the brainy, inventive, complex species we are today.

Can art pave the way for a politically divided nation to move forward? Artist, cultural strategist and TED Fellow Marc Bamuthi Joseph reflects on the role of art, forgiveness and remembrance in the pursuit of public healing — especially...

AI is transforming the way we work — could it also reshape what makes us human? In this quick and insightful talk, evolutionary anthropologist Sarah Blaffer Hrdy explores how the human brain was shaped by millions of years of shared...

What if doing your chores were as easy as flipping a switch? In this talk and live demo, roboticist and founder of 1X Bernt Børnich introduces NEO, a humanoid robot designed to help you out around the house. Watch as NEO shows off its...

Look around — almost everything you see was manufactured, from baby formula to AI data centers and beyond. Yet we rarely think about how it’s all made. Factory fixer Lauren Dunford pulls back the curtain on modern manufacturing,...

We can't know if or how animals understand death, but behavioral changes in some species could mean they experience something similar to human grief.

What if the change you fear most is actually the best thing for you? Change leader Kristy Ellmer shares a powerful lesson on how even the most difficult transitions, including layoffs and company-wide transformations, can open unexpected...

New tech spawns new anxieties, says scientist and philosopher Grady Booch, but we don't need to be afraid an all-powerful, unfeeling AI. Booch allays our worst (sci-fi induced) fears about superintelligent computers by explaining how...

Today, rats are often regarded as the most successful invasive species in the world. The most common species of rat scurried onto the scene roughly 1 to 3 million years ago in Asia. There, they craftily survived Earth’s most recent ice...

For as long as humans have had lice, we’ve fought hard to get rid of them. Nit combs, the fine-tooth brushes used to remove lice and their sticky eggs, have been found among the ancient remains of cultures across the globe. Today it’s...

It seems wild that some animals basically trade in their bodies for new ones during their lifetime, but it's actually really common – and it makes a lot of sense.