SciShow
What Happens After You Flush?
Humans have always peed and pooped, but where it goes after we’ve done our business has changed a lot. In fact: The water you just drank may well have been a part of someone’s urine just weeks ago! SciShow explains!
Be Smart
Defusing the Population Bomb
Is overpopulation real? Is Earth filling up with too many humans? How many people can Earth hold, anyway? As our species approaches 8 billion, human overpopulation is a major concern for many people. How can we reduce poverty and our...
MinuteEarth
Epigenetics: Why Inheritance Is Weirder Than We Thought
Epigenetics: Why Inheritance Is Weirder Than We Thought
SciShow
What's the Fastest Speed a Person Could Run
World-class sprinters just keep getting faster, with some running over 40 kilometers per hour! That kind of makes you wonder… how much faster can humans get?
SciShow
9 Poisonous Plants You Might Have Around Your House
Houseplants can be great for your mental health, but eating some of them can be far worse for your bodily health than you might think. Chapters View all DIEFFENBACHIA 0:47 2 DAFFODILS 2:44 OLEANDER 3:42 RHODODENDRONS 4:39 LILY OF THE...
Crash Course
The Agricultural Revolution Crash Course World History
In which John Green investigates the dawn of human civilization. John looks into how people gave up hunting and gathering to become agriculturalists, and how that change has influenced the world we live in today. Also, there are some...
Crash Course
Population, Sustainability, and Malthus: Crash Course World History 215
In which John Green teaches you about population. So, how many people can reasonably live on the Earth? Thomas Malthus got it totally wrong in the 19th century, but for some reason, he keeps coming up when we talk about population. In...
Crash Course Kids
The Basics of Freshwater
We have a lot of water on Earth, but we also can't actually drink much of it... or use it for farming. That's because most of the water on Earth is saltwater. We humans, like a lot of living things, need freshwater to survive. In this...
TED-Ed
TED-ED: A brief history of alcohol - Rod Phillips
Nobody knows exactly when humans began to create fermented beverages. The earliest known evidence comes from 7,000 BCE in China, where residue in clay pots has revealed that people were making an alcoholic beverage from fermented rice,...
SciShow
The Science of Alcohol: From Beer to Bourbon
Alcohol has been an important part of human culture for a very long time, and from the basic process, we've figured out how to create a wide variety of alcohol beverages!
Be Smart
Dogs and Humans: A 30,000-Year Friendship (ft. MinuteEarth)
Of all the species that humans have domesticated, dogs are our oldest animal friends. But how did a group of wolves become the furry pup at the end of the bed? New research is finally unlocking the paw-in-hand evolution of dogs and...
SciShow
Common Misconceptions About Evolution
Evolution is particularly vulnerable to misunderstandings around the scientific language. SciShow clears up some confusing language!
Crash Course Kids
A Fresh Future
So, how are people fixing their water problems? In this episode of Crash Course Kids, Sabrina talks about a few different examples how some freshwater sources were good, then bad, then made good again. Also, Sabrina talks about...
TED-Ed
TED-ED: The surprising reasons animals play dead - Tierney Thys
From lemurs to lizards, ants to amphibians, sharks to chickens, hundreds of animals "play dead" as a survival tactic. But how and why do animals do this? Tierney Thys explains how this curious behavior, known as tonic immobility or TI...
Bozeman Science
Essential Characteristics of Life
Paul Andersen describes three main characteristics of life that are conserved in all organisms on the planet. The universal genetic code, the central dogma of biology, and shared metabolic pathways give us details of the original...
Crash Course
How Did Religion Spread Along the Silk Road? Crash Course Geography
Today we’re going to talk about the collection of routes known as the Silk Roads, and explore how worldview and other ideas spread along those trade routes. The Silk Roads are responsible for everything from the spices we use when we...
SciShow
We Taught Birds to Sing by Altering Their Brains SciShow News
We can now implant memories into birds’ brains to teach them how to sing, and human fetuses have a couple muscles that disappeared from our adult ancestors over 200 million years ago.
Crash Course Kids
Severe Weather
So, what's the difference between 'weather' and 'severe weather'? Is it just how hard the wind is blowing? Is it just thunder and lighting? Well, it can be some or all of those things. In this episode of Crash Course Kids, Sabrina talks...
SciShow Kids
Should We Go to Mars?
Jessi and Squeaks love pretending to be space explorers, visiting far-away planets! Did you know that, right now, there are scientists working on ways to send people to other planets in real life? And where better to start than our...
Crash Course
Population & Food: Crash Course Geography
Today we’re going to talk about the link between population and food energy. As the world's population keeps growing, finding ways to provide enough food and water for everyone while supporting a sustainable environment can be tricky!...
TED Talks
TED: And for my next trick, a robot | Marco Tempest
Marco Tempest uses charming stagecraft to demo EDI, the multi-purpose robot designed to work very closely with humans. Less a magic trick than an intricately choreographed performance, Tempest shows off the robot’s sensing technology,...
SciShow
Do we have more than 5 senses?
The Greek philosopher Aristotle used sensory experiences and body parts to propose that humans have five senses. But almost as soon as he proposed them, people noticed things that didn’t fit the bill. And the debate has continued ever...
Curated Video
Globalization I - The Upside: Crash Course World History
In which John Green teaches you about globalization, a subject so epic, so, um, global, it requires two videos. In this video, John follows the surprisingly complex path of t-shirt as it criss-crosses the world before coming to rest on...
SciShow Kids
Our Ancient Human Cousins!
If you traced your family tree back far enough, you'd see that you're related to all 7 billion people on Earth! And if you trace it back even farther than that you'll find our ancient human cousins, the Neanderthals!