Bozeman Science
Stratospheric Ozone
In this video Paul Andersen explains how stratospheric ozone protects humans from ultraviolet light. He explains how stratospheric ozone is formed when diatomic oxygen absorbs an ultraviolet photon and is split into two free oxygen...
SciShow
The Only Animal That Can't Breathe Oxygen
Oxygen is so essential for animals that every multicellular species we’ve ever studied has the ability to use oxygen to create energy... except one.
SciShow
Why Can't You Bring Mercury Thermometers on Planes?
Mercury thermometers are handy and useful, but they could be extremely dangerous to bring on planes.
SciShow
What Happens If You Leave Your Contacts in for Too Long?
If you're wearing contacts, you might want to take a look at this.
MinuteEarth
The Bacteria That Made Life Possible Is Now Killing Us
Thanks to the St. Croix Watershed Research Station for sponsoring this video! To learn more about their work, visit https://www.smm.org/scwrs/. Aquatic cyanobacteria first oxygenated earth’s air, making human life possible; now, due to...
TED-Ed
TED-Ed: Where did Earth's water come from? - Zachary Metz
Water covers over 70% of the Earth, cycling from the oceans and rivers to the clouds and back again. It even makes up about 60% of our bodies. But in the rest of the solar system, liquid water is almost impossible to find. So how did our...
SciShow
Why Do Planes Fly So High?
We've all been flying high ever since the development of the jet engine in the mid-1950s. But why were jets were designed to fly at those high altitudes in the first place?
SciShow
Microbes Might Survive on Mars | SciShow News
We’re all excited about the Mars rover Perseverance this week, but scientists are also working on some other exciting things!
TED-Ed
TED-Ed: The simple story of photosynthesis and food - Amanda Ooten
Photosynthesis is an essential part of the exchange between humans and plants. Amanda Ooten walks us through the process of photosynthesis, also discussing the relationship between photosynthesis and carbohydrates, starch, and fiber --...
SciShow
The Smelly, Oozy, Sometimes Explode-y Science of Garbage
You ever think about where your trash goes? How long it takes to decompose? And whether your garbage can become ... dangerous? You should! Hank explains the science of trash, how we've dealt with it (or not) over the ages, and both the...
Amoeba Sisters
Fermentation
What happens when you can't do aerobic cellular respiration because oxygen isn't available? Explore fermentation with The Amoeba Sisters! This video focuses on alcoholic fermentation and lactic acid fermentation, and it also mentions how...
SciShow
What Ventilators Taught Us About Breathing
Humans’ experiences with ventilators have taught us that sighing isn’t just a way to express yourself: it’s a vital part of our everyday breathing.
Bozeman Science
Catalysts
Paul Andersen explains how catalysts can speed up a reaction without being consumed in the reaction. Catalysts can lower the activation energy of reaction be stabilizing the transition state. They can also create new reaction pathways...
SciShow
What's the Ultimate Campfire Fuel
It’s summertime and people are out camping, barbecuing, and using FIRE! But what’s a better fuel to use for your summer activities? Wood or charcoal? There are pros and cons to both fuels, so check out this episode of SciShow to decide...
Crash Course
An Overview of Aldehydes and Ketones: Crash Course Organic Chemistry
Ketones and aldehydes are all around and inside us, from the strong smelling component of nail polish remover, acetone, to hormones in our bodies, to drug treatments for allergies, COVID-19, and even cancer! We’ve already learned a bit...
SciShow
Why Do Apples Turn Brown?
Why do apples turn brown after you cut them, or when they rot? Basically for the same reason that human hair, eyes and skin is brown, too. Not that we're calling you rotten. Quick Questions explains!
SciShow
Pennsylvania's 50-Year-Old Coal Fire
SciShow takes you to Centralia, Pennsylvania, site of one of the oldest, biggest coal fires in the United States, and explains the chemistry of spontaneous combustion.
SciShow
3 Animals That Breathe Through Their Butts
If you want to be able to breathe underwater, you're going to need to get creative. So some turtles, dragonfly nymphs, and sea cucumbers decided to use their butts.
SciShow
Why does ice float?
Why does ice float? You might not think about it, but this special property of frozen water is what makes your iced tea tinkle and makes a lot of aquatic life possible. Hank gets in touch with his inner Olaf to explain the wonder that is...
SciShow
What Happens If You Drink a Glass of Heavy Water?
Heavy water, or deuterium oxide, has some important scientific applications, but let's say you're reeeeaallly thirsty... is it safe to drink?
SciShow
Does Wine Really Need to 'Breathe'?
Whether it's from a box or a bottle, letting your wine 'breathe' can actually make a difference in its taste.
Bozeman Science
Anaerobic Respiration
Paul Andersen explains the process of anaerobic respiration. This process involves glycolysis and fermentation and allows organisms to survive without oxygen. Lactic acid fermentation is used in animals and bacteria and uses lactate as...
Curated Video
What Is Fire?
Why does fire burn? What's the chemistry and physics of a flame? This week, learn about the beautiful science happening inside a flame!
SciShow
The Smokin' Science of Fire Extinguishers
Different fuels create different types of fires, and each one needs to be extinguished using a specific strategy. Do you know which class of extinguisher is needed for different fires?