SciShow
Why is my Whiteboard so Dirty?
Dry erase markers work on desks, doors (made of shiny particle board), and even mirrors! A funny video explores why dry erase markers leave behind marks when used. The narrator explains what the markers are made of, specifically the...
SciShow
Exotic Chemistry: World's Oldest Water and The Rarest Element
The oldest water, found buried in a mine, serves as a time capsule of the environment that existed 2.6 billion years ago. An interesting video explores science news from 2013—more specifically, the oldest water ever discovered and the...
SciShow
IDTIMWYTIM: "Organic"
About 18 percent of the human body is carbon, yet carbon found in its pure form in nature forms graphite and diamonds, which are nonliving things. The narrator explores the word organic, explaining how its meaning in science has changed...
SciShow
Oxygen is Killing You
Prevent cell destruction from free oxygen in your body by eating antioxidants such as blueberries, pecans, cranberries, and dark chocolate. An interesting video discusses the dangerous side of oxygen. From rust to free radicals, viewers...
SciShow
9 Scientific Cooking Techniques
Liquid nitrogen makes microscopic ice crystals, which make for a creamier food product than normal freezing. A gastronomical video explores nine different cooking techniques that are scientifically based. From food pairing to using...
SciShow
What's the Difference Between Baking Powder and Baking Soda?
During World War II, there was a shortage of cream of tartar and other baking products, so baking soda was introduced as an alternative. A fascinating video explores how people used to make breads and some takes a look at some of its...
SciShow
Can I Die From Too Much Water? Blood? Oxygen?
When someone drinks too much water in a short amount of time, the kidneys cannot keep up, causing blood to become waterlogged. A fascinating video explores what happens in the body when you get too much of things you need: water,...
SciShow
Why Does Water Go Stale Overnight?
There are many people who simply don't like the taste of water, whether served hot, cold, or fresh ... so what about day-old water? The video explores why drinking water that sits out overnight tastes stale to some people the next...
SciShow
Weight Loss Pills: Fact Or Fiction?
Most over-the-counter weight loss pills have not been tested or even approved by the FDA. Learners see the truth behind weight loss pills and why many claims are false. The narrator begins by exploring prescription diet pills—fat...
SciShow
High-Fructose Corn Syrup: The "Dark Lord" of Nutrition
High fructose corn syrup (HFCS) can be found in many of the things people consume—yogurts, baked goods, canned goods, condiments, and beverages. An enlightening video explores high fructose corn syrup and its bad reputation. The narrator...
Crash Course
Vision
Your eye cells come in different shapes and serve different functions; rod-shaped cells see shapes and cone-shaped cells see color. Video 18 in the series of 47 teaches all about vision. Scholars see (no pun intended!) how vision works....
SciShow
Strontium: It Knows Where You've Been
Humans ingest approximately 1-5 mg of strontium everyday! An interesting video describes how scientists use the element strontium to learn about people. The narrator explains where strontium is found and how it gets into and builds...
SciShow
Does Hot Water Freeze Faster Than Cold Water?
Hot water freezing faster than cold water is called the Mpemba effect. The interesting video analyzes the concept of water temperature and its effect on freezing rates. The narrator explores past experiments showing this effect and...
SciShow
Helium
The helium in a balloon comes from the radioactive decay of the elements thorium and uranium. Video two in this series of 48 explores the element helium. The narrator discusses how humans use it, where it is found, how the United States...
Crash Course
Digestive System (Part 2)
It takes about seven seconds for food to move from the mouth to the stomach. Pupils follow food from the mouth through digestion, exploring where mechanical and chemical digestion occur. Saliva, enzymes, acids, and chyme are a small...
Crash Course
Immune System (Part 1)
A lack of good sleep weakens your immune system by making you more susceptible to infections and making recovery time longer. Video 45 in a series of 47 focuses on the immune system. Pupils hear how the body defends itself, from its...
Crash Course
Blood Vessels (Part 2)
High schoolers learn what blood pressure measures, how it becomes too high, and the effects on the body. The narrator also explains how the body can deal with high blood pressure on its own, at least for a short amount of time.
Crash Course
The Heart – Under Pressure (Part 1)
Use the 25th video in the series of 47 to learn about the human heart, its structure, and function. The narrator teaches about the atria, ventricles, blood pressure, arteries, and veins.
Crash Course
The Nervous System – Synapses! (Part 3)
The narrator of this short video breaks down synapses and how they work in video number 10 in a series of 47 about the human body. It specifically focuses on electrical and chemical synapses and how they work, and ends by exploring...
Crash Course
Muscles – Organismal Level (Part 2)
Humans use 200 muscles to take one step — that's a lot of muscles! Learners see how skeletal muscles work to pull on bones, creating movement. The narrator then explores motor units, muscle twitches, impulses, contractions, and isotonic...
Crash Course
Hearing and Balance
Sounds travel into our ears at 770 mph. Teach class members about our sense of hearing and how this helps with balance. Learners explore sound as it travels from the air into our ears and is translated by the brain. They then see how...
Crash Course
Taste and Smell
According to scientists and based on research, you can smell fear and disgust. The narrator explains how humans smell, following the chemical scent of pizza from outside the nose, into the body, and its effects. To round out the 16th...
Crash Course
Autonomic Nervous System
The sympathetic nervous system is what puts a person into fight or flight mode in scary situations. The 13th video in a series of 47 covers the autonomic nervous system, specifically how the sympathetic and parasympathetic systems...
Crash Course
The Integumentary System – Skin Deep (Part 1)
Every minute, your skin sheds more than 30,000 dead skin cells. The sixth video of 47 teaches pupils about the three layers of skin, their composition, and different cell types. It takes a trip through the layers to help individuals...