Bozeman Science
Signal Transmission and Gene Expression
Paul Andersen explains how signal transmission is used to alter both cellular function and gene expression. He uses the example of epinephrine release in humans and how it is used in the fight or flight response. Epinephrine causes liver...
SciShow
Algae Might One Day Rule the World
Algae is one of the oldest and most abundant forms of life on planet Earth, so it only makes sense that it offers a ton of solutions to unsustainable modern problems. Here are five ways in which algae continues to reshape the world.
SciShow
The Really Important Reason Your Lungs Have Taste Receptors
Scientists believe that your taste receptors are meant for taste, but how do they explain the taste receptors on your lungs?
SciShow
Why You Should Never Put Tomatoes in the Fridge!
Without refrigerators, we'd have spoiled milk, moldy cheese, and warm sodas. However, there are some foods that don't fare so well in a chilly fridge, including tomatoes.
Bozeman Science
Air Pollution
In this video Paul Andersen explains how air pollution is any chemicals in the atmosphere that negatively affect human health. Primary pollutants (like CO, VOCs, NOx, SO2, PM, and Lead) as well as secondary pollutants (like Ozone, nitric...
Crash Course
Acid-Base Reactions in Solution: Crash Course Chemistry
Last week, Hank talked about how stuff mixes together in solutions. Today, and for the next few weeks, he will talk about the actual reactions happening in those solutions - atoms reorganizing themselves to create whole new substances in...
TED-Ed
TED-Ed: When is water safe to drink? - Mia Nacamulli
Water is refreshing, hydrating, and invaluable to your survival. But clean water remains a precious and often scarce commodity - there are nearly 800 million people who still don't have regular access to it. Why is that? And how can you...
SciShow
How Plants Tell Time
Plants don’t have brains or muscles, and yet some of them can perform such feats as eating insects or following the sun. Scientists haven’t completely figured out how this happens, but they do have some pretty strong leads.
SciShow
Dangerous Soaps: How Animals Use Surfactants
When you think of surfactants, you might think of soaps, detergents and other man-made chemicals. But it turns out that some other animals utilize their own versions of these sudsy molecules.
SciShow
What Makes Sourdough Bread Sour?
With sandwiches and toast, sourdough bread always adds an extra accented flavor to your meals. But where does the signature tartness come from?
Crash Course
Doing Solids: Crash Course Chemistry
In which Hank blows our minds with the different kinds of Solids out there and talks about why they're all different and have different properties. Today, you'll learn about amorphous and crystalline solids, types of crystalline solids,...
SciShow Kids
Why Do We Sweat?
You probably know that sweating is a way for your body to cool off, but how does it help? And why don't other animals, like cats of dogs sweat? Join Jessi and Squeaks to learn all the answers to these questions and more!
TED-Ed
TED-ED: What triggers a chemical reaction? - Kareem Jarrah
Chemicals are in everything we see, and the reactions between them can look like anything from rust on a spoon to an explosion on your stovetop. But why do these reactions happen in the first place? Kareem Jarrah answers this question by...
TED-Ed
TED-Ed: How one scientist took on the chemical industry
In 1958, after receiving a letter describing the deaths of songbirds due to the pesticide known as DDT, Rachel Carson began an investigation into the misuse of chemicals and their toll on nature. In 1962, she published her findings in...
SciShow
6 Common Misconceptions About Cancer
Today we take a look at six misconceptions about cancer that seem plausible, but just don't hold up. Chapters SHARKS DON'T GET CANCER & TAKING SHARK CARTILAGE SUPPLEMENTS WILL CURE OR PREVENT CANCER 0:45 IF YOU HAVE CANCER YOU SHOULD...
SciShow
How Do Fabric Brighteners Work?
Fabric brighteners can liven up your old, faded clothing. But they don’t actually clean your clothes, and they’re often banned in the military!
Crash Course
Immune System, part 1: Crash Course A&P
Our final episodes of Anatomy & Physiology explore the way your body keeps all that complex, intricate stuff alive and healthy -- your immune system. The immune system's responses begin with physical barriers like skin and mucous...
SciShow
Your Bones Do More Than You Think
Bones, you probably have them and they're for more than holding your body upright.
SciShow
Spinach That Detects Explosives!
What's both edible, and capable of sending you an email to let you know there's explosives nearby? Spinach! Well, spinach with some nanotechnology embedded within it. Learn how Popeye's favorite veggie is involved in the field of plant...
SciShow
Great Pacific Garbage Patch
Hank tells us about the enormous concentrations of plastic debris floating around in the Pacific Ocean, why they're there and why they're a problem.
TED-Ed
TED-Ed: The brilliance of bioluminescence - Leslie Kenna
Some lucky animals are naturally endowed with bioluminescence, or the ability to create light. The firefly, the anglerfish, and a few more surprising creatures use this ability in many ways, including survival, hunting, and mating....
TED-Ed
TED-ED: The life cycle of a t-shirt - Angel Chang
Consider the classic white t-shirt. Annually, we sell and buy 2 billion t-shirts globally, making it one of the most common garments in the world. But how and where is the average t-shirt made, and what's its environmental impact? Angel...
Crash Course
Pollution: Crash Course Ecology
Hank talks about the last major way humans are impacting the environment in this penultimate episode of Crash Course Ecology. Pollution takes many forms - from the simplest piece of litter to the more complex endocrine distruptors - and...
Curated Video
The Role of Chemical Reactions in Light, Fire, and Emotions
This video explores how chemical reactions create light and power various processes, from lighting up a room to propelling a rocket into space. It also delves into the fascinating ways chemical reactions occur within our bodies,...