There was a time in Earth’s history that was so stable, geologists once called it the Boring Billion. But the fact is, this period was anything but boring. In fact, it set the stage for our modern version of plate tectonics - and...

The unexpected discovery of an entirely new domain of life was pretty huge and surprising - even if archaea do just look like bacteria. But, in recent years, it’s been their connection to us that's turned out to be particularly full of...

The group of bacteria known as Chlamydiae doesn't do much to endear itself to us since these bacteria can cause a variety of illnesses. But it turns out that we may have Chlamydiae to thank for life as we know it!

In which Hank and John Green teach you about life on Earth. They won't be giving advice on how life should be lived, because this is a history series. Instead, they'll teach you about the earliest forms of life on Earth, and some of the...

Explores classification in biology as well as taxonomy hierarchy: domain, kingdom, phylum, class, order, family, genus, and species with The Amoeba Sisters! This video also discusses the importance of scientific names and why...

Explore the endosymbiotic theory with the Amoeba Sisters! This theory explains the development of the eukaryote cell from prokaryote cell symbiosis. Scientific theories are also briefly defined. Table of Contents: Intro 00:00 What is a...

Get introduced to protists and fungi with the Amoeba Sisters! This video explores basic cell type, mode of feeding, habitat examples, and ecology of both protists and fungi. This video also mentions a few examples of how protists and...

Paul Andersen explains how eukaryotic cells use compartmentalization to increase the surface area and level of specialization within the cell. Prokaryotic and eukaryotic cells are compared and contrasted. The role of both the...

The amazing legacy of animal cells.

With a solid understanding of biology on the small scale under our belts, it's time for the long view - for the next twelve weeks, we'll be learning how the living things that we've studied interact with and influence each other and...

Organisms whose cells lack a nucleus and other membrane-bound structures.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...

The grouping of organisms into categories with similar features.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...

A threadlike strand of DNA and associated proteins in the nucleus of eukaryotic cells, and the functional units of inheritance.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using...

The process by which a single parent cell divides into two or more daughter cells.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

Discover the systematic grouping of organisms according to the structural or evolutionary relationships among them.
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Biology - Adaptation And Evolution - L
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rning Points.
/> A Twig FactPack Film.
Open...

Your skin is covered in microorganisms.
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Life processes - Humans and other animals -
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Learning Points
Healthy human skin has millio
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s of microorganisms living on it....

Microorganisms live everywhere on Earth, but what are they and how do they affect humans?
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Life processes - Humans and other animals -
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Learning Points
Microorganisms are...

There's a lot of life out there ... and we make sense of it all using kingdoms.
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Life processes - Variation and classification - Classifying


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Learning Points
There are five...

Delve into the characteristics of the biosphere, the sphere of Earth that encompasses all living organisms. Learn about biomes, ecological communities, and the vital role of life on our planet.



Earth's Materials and Systems...

This video explores bacteria, detailing their characteristics, classification, and history. It explains how bacteria, as prokaryotes, are present in diverse environments, from extreme heat to extreme cold. The video also discusses...

This video looks at the kingdoms of life - animals, plants, fungi, protoctists and bacteria - as well as viruses - and explores the similarities and differences between them.

For each one we explore their key...

Learn all about the Prokaryotic and Eukaryotic Cells with this fun educational music video Human Cells . Brought to you by KLT.

The Cell defines the term cell by explaining that a cell is the basic unit of structure and function of all living things.

The Prokaryotic Cell examines a prokaryotic cell by describing its structure.