Particle physics isn't simple, but it was much more confusing before physicists knew about quarks.

Why do people often buy the same brands over and over again?

A group of British and Australian cyberpsychologists argues that emojis deserve way more research attention than they're getting - and scientists have discovered how to create on-demand killer mice!

We're surrounded by choices in life, but psychologists have found that having those choices doesn't necessarily make us happy.

Muscle knots: more mysterious than you think!

In this collection of classic MinuteEarth videos, we learn more about the planet’s two favorite pets.

The people around you have a lot more to do with how you think than you might realize.

Hank introduces us to ourselves by taking us on a journey through the fascinatingly diverse phyla known as chordata. And the next time someone asks you who you are, you can give them the facts: you're a mammalian amniotic tetrapodal...

Today we’re going to talk about borders. Borders can bring people together, evoke passion and war, divide, conquer, and solidify power. We’re going to focus on the tyranny of the map which is what happens when those in power draw...

Orcas are some of the most effective predators in the ocean, and each population of them has entirely different prey preferences and hunting techniques, more than earning their nickname “killer whale!” Chapters 1 MAKING WAVES 2:12...

Sleep is your life-support system and Mother Nature's best effort yet at immortality, says sleep scientist Matt Walker. In this deep dive into the science of slumber, Walker shares the wonderfully good things that happen when you get...

In which Hank introduces us to the world of Organic Chemistry and, more specifically, the power of hydrocarbon. He talks about the classifications of organic compounds, the structures & properties of alkanes, isomers, and naming...

On January 16th, 1895, two men arrived at Liliʻuokalani's door, arrested her, and imprisoned her. The Missionary Party had recently seized power and now confiscated her diaries, ransacked her house, and claimed her lands. Liliʻuokalani...

How do public opinion polls work? And, more importantly, are they accurate? Jason Robert Jaffe reveals the complexities and biases of polls and provides tips on how to think about polls as we make everyday decisions.

Many organizations have made it their mission to expand the rights of Black Americans. The NAACP and the Urban League are examples of influential organizations with long histories. But a long history or extensive membership isn't always...

Co-ops are a big part of the global economy: they employ 10% of the world's workforce and over two trillion dollars flow through their doors every year. At a co-op, there's no single person with overarching, top-down power over everyone...

This week, researches published a genetic analysis of the 11,500-year-old remains of a baby found in Alaska, near where the first Americans crossed the Bering land bridge. That analysis has answered some lingering questions about human...

Paul Andersen explains the structure and importance of proteins. He describes how proteins are created from amino acids connected by dehydration synthesis. He shows the importance of chemical properties in the R-groups of individual...

We know whales as graceful giants bound to the sea. But what if we told you there was actually a time when whales could walk.

We've talked about constellations; groups of stars in the night sky that we assign names to. But there are a certain group of special constellations called The Zodiac that Sabrina is going to chat about. Gemini, Sagittarius, Scorpio?...

Alkanes are kind of the wallflowers of organic chemistry, but they still have important functions in the world around us. In this episode of Crash Course Organic Chemistry we’re building our knowledge of organic molecules by learning all...

Squeaks is getting ready to head back to school and he couldn’t be more excited! To make sure he’s all set for the first day, he and Jessi are watching some videos so he goes in confident and prepared!

In part 1 of our special series on human ancestry, we tour through our family tree to meet our ancestors and distant cousins, and to find out what made us human along the way. The story of human ancestry is not a simple progression from...

In this video Paul Andersen explains how covalent network solids form elementally (like graphite) or by combining multiple nonmetals (like quartz). Covalent network solids contain elements from the carbon group because they have four...