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...

The cell is the basic unit of life, and our understanding of it has advanced as science, and the tools available to scientists, has advanced. In this episode of Crash Course Biology, we’ll take a look at the difference between...

What’s a human? And how did we become humans, anyway? In this episode of Crash Course Biology, we’ll meet some of our closest relatives and trace how we evolved into the brainy, inventive, complex species we are today.

There’s an immense world of tiny stuff within us and around us—but how do we know about it? In this episode of Crash Course Biology, we’ll discover how we see what we can’t see, thanks to the help of centuries-old tools and more recent...

Despite the diverse appearance and characteristics of organisms on Earth, the chemicals that make up living things are remarkably similar, often identical. In this episode of Crash Course Biology, we’ll look at the building blocks of the...

Crocodiles, and birds, and dinosaurs—oh my! While classifying organisms is nothing new, phylogeny— or, grouping organisms by their evolutionary relationships—is helping us see life in a whole new light. In this episode of Crash Course...

Humans may have been around for a long time, but life has existed for way longer. In this episode of Crash Course Biology, we’ll journey through deep time to uncover the history of life on Earth. We’ll explore the big, game-changing...

For a long time, we could only guess what color a dinosaur might be. But in the past decade, there has been an explosion of color.

Paul Andersen (with the help of PatricJMT) explains why mathematics may be biology's next microscope.

Observing the effects of microbes using satellites can give us all sorts of useful information about life on Earth ... and other planets too.

In the late 1970s, two physicists in Switzerland set out to invent a new type of microscope using quantum physics that would allow them to do something no one had ever done before: see the individual atoms in a sheet of metal.

Explore how to use a light microscope with the Amoeba Sisters! Includes microscope parts, how to use, and some helpful tips! Additionally, this video introduces a few types of light microscopes as well as electron microscopes. Expand...

For a long time, we could only guess what color a dinosaur might be. But in the past decade, there has been an explosion of color.

In recent years, scientists have come up with new ways to hack the physics of light, to invent the most powerful microscopes the world has ever seen.

Who wants to be a biologist? Learn all about scientists who study life -- like where they do their jobs, the questions they ask, and the tools they use!

Microscopes are great for studying tiny things, but they have limits. Luckily, scientists have found a way to make tiny things larger, and it involves a chemical you can find in diapers.

Perhaps you’ve punched out a paper doll or folded an origami swan? TED Fellow Manu Prakash and his team have created a microscope made of paper that's just as easy to fold and use. A sparkling demo that shows how this invention could...

In this episode of Crash Course Anatomy & Physiology, Hank gives you a brief history of histology and introduces you to the different types and functions of your body's tissues.
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It's all about the SUPER TINY in this episode of Crash Course: History of Science. In it, Hank Green talks about germ theory, John Snow (the other one), pasteurization, and why following our senses isn't always the worst idea.

Since the invention of the first light microscope, microscopy has evolved so much. We are now able to see things at an atomic level. In this video, we will learn who invented the light microscope and the many other breakthroughs that...

In this video, we explore the world of microscopes and how they magnify objects down to the cellular level. We learn about compound microscopes, their lenses, and how they work to make objects appear larger. Discover how scientists use...

A microscope is a special piece of equipment that makes small things look bigger.
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Learning Points
Microscopes allow us
t

o see objects that are...

Antony van Leeuwenhoek was a Dutch scientist and a pioneer in the field of microbiology. Often referred to as "the Father of Microbiology," he was the first to observe and describe microorganisms using a microscope that he designed...

In this video, we cover:

- The different parts of a micros
cope
- What the terms image, object, magnification and resol

ution mean

Exam
board specific info:
AQ
A - Suitable for everyone
IGCSE Ed
excel -...