It's a hard nut to crack: in order to prevent food waste, we rely on plastic packaging and refrigeration, which harm the environment. What if we could turn to nature to address these challenges? Engineer and chemist Jenny Du shares how a...

The cell membrane is a protein-studded phospholipid bilayer that not only protects our cells, but also regulates what goes in and out. In this episode of Crash Course Biology, we’ll look at the structure of the bilayer, learn about its...

Right now, discarded parts from old spacecraft, bags of pee, and dead probes are just floating around in space, but it doesn’t have to be like that. Let's take a look at some of the ways we've figured out to reduce, reuse, and recycle in...

A marathoner needs a lot of energy to make their long distance treks, and this is no different for migratory birds. But how are these marathon flyers getting that energy from the mud they’re slurping off of beaches along the way?

The name "E. coli" is enough to strike terror into the stomachs of anyone who has experienced food poisoning. But some strains of this bacteria don't actually make you sick, and have turned out to be useful tools for bioengineers.

Whooping cough used to infect hundreds of thousands of people in the U.S. and kill thousands of children every year. Join us as we learn about the women who developed the vaccine that has since saved thousands of lives.

A marathoner needs a lot of energy to make their long distance treks, and this is no different for migratory birds. But how are these marathon flyers getting that energy from the mud they’re slurping off of beaches along the way?

This video focuses on general functions of biomolecules. The biomolecules: carbs, lipids, proteins, and nucleic acids, can all can have important functions in the body. However, this video is not giving human dietary guidelines and...

Hyenas communicate via an information-dense physical medium (hyena butter) - and now MinuteEarth does too (book).

Almost everyone loves the smell of rain, but where does the smell come from? Join Quick Questions as we stop and smell the chemistry!

Okay- you lost weight, but what actually happened to those fat-storing cells?

As the narrative goes, fat is bad. Well, it's actually more nuanced than that. The type of fat you eat is more impactful on your health than the quantity. George Zaidan examines triglycerides, the varied molecules that make up fat, and...

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.

You know what starvation is, but do you know what it does to you? Hank walks you through the three major metabolic phases of starvation, from burning sugars to, basically, self-cannibalism.

Nachos are great...if you are among the lucky ones whose body can digest them. When digestion goes according to plan, the small intestine performs most of your chemical digestion in the duodenum, while accessory organs including...

For life to evolve on Earth, a bunch of complex organic molecules had to evolve a way to assemble into cells. So how did those proto-cells get cell membranes? Some researchers have a new hunch. Also, scientists are borrowing a trick from...

Metabolism is a complex process that has a lot more going on than personal trainers and commercials might have you believe. Today we are exploring some of its key parts, including vital nutrients -- such as water, vitamins,...

Paul Andersen describes the important features of the skeletal system. He starts by comparing and contrasting endoskeletons and exoskeletons. He then explains how the human skeleton provides support, movement, storage, blood production...

Sex qualifies as exercise, doesn't it? So enhance your performance by eating right—and your body won't be the only one that benefits.

Fatty acids are vital for energy, cell structure, and managing inflammation. Discover their types and functions in the human body. Whether it's saturated, unsaturated, or the crucial omega-3s, we break down how these molecules influence...

Rancidity refers to the complete or incomplete hydrolysis or oxidation of fats and oils when exposed to air, light, moisture, and bacterial activity; this generally occurs in food items, making them undesirable for consumption. In more...

Naturally occurring carboxylic acids with long, unbranched hydrocarbon chains.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....

Organic molecules that contain long carbon chains or rings and which tend to be insoluble in water, though soluble in organic solvents.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60...

The story of an extreme experiment which reversed scientific opinion on the health effects of omega-3 fatty acids. Chemistry - Chemical Industries - Learning Points. In 1979, Prof Sinclair conducted an extreme experiment to prove his...