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video thumb - What is Natural Selection?
9 minutes, May 2013
Biology, Evolution, Genetics
Featured Video

What Is Natural Selection?

Natural Selection is one of the main concepts found within the theory of evolution. See how it works!

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DNA vs RNA

DNA vs RNA: Differences in form and function

DNA and RNA are similar molecules but have small, very important differences. These differences allow them to serve distinct functions in the cell.

11 minutes, January 2023
Biology
Rebel Genes

Genetic Conflict and the Parliament of Genes

Are your genes working in harmony or is there genetic conflict? Here you’ll learn the surprising hoops your genome must jump through to stay functional.

16 minutes, September 2022
Biology
Darwin Chimp Endogenous Retrovirus

DNA Evidence For Evolution: Endogenous Retroviruses

An Endogenous Retrovirus is a genetic scar left by certain types of virus infections. We can use Endogenous Retroviruses to build evolutionary trees.

10 minutes, April 2021
Biology
Gene's Eye View of Evolution

What Is The “Gene’s Eye View” Of Evolution?

Genes are the smallest things capable of evolution. Understanding how they evolve helps us solve tough mysteries in evolutionary biology.

11 minutes, December 2020
Metabolism-First

What Is The Metabolism‑First Hypothesis For The Origin Of Life?

Find out what the study of cellular metabolism is teaching us about the origin of life, and what a deeper study of metabolism might reveal.

10 minutes, October 2020
Antonie van Leeuwenhoek with his microscope

A Brief History Of The Microscope

The invention of the microscope transformed science forever. Here we explore what microscopes have revealed and what the best microscopes today can do.

10 minutes, May 2020
Biology
Darwin and the Coronavirus

Where Do New Viruses Come From?

Learn how viruses differ from other microbes, why most viruses only infect one type of host organism, and how viruses evolve to infect new hosts!

10 minutes, February 2020
Biology
Video Thumb - What Is Horizontal Gene Transfer?

Quick Definition: What Is Horizontal Gene Transfer?

In plants and animals, most genes are passed from parent to child. Sometimes, however, genes can spread between unrelated individuals.

5 minutes, November 2019
Biology
video thumb - What is Symbiosis?

What Is Symbiosis?

Symbiosis is the “long-term living together of unlike organisms”. Here we explore how symbiotic relationships evolve over time.

9 minutes, October 2019
Biology
Video Thumb - Quick Definition: What is a fossil?

Quick Definition: What Is A Fossil?

Here you will see how scientists define “fossil” and you will get an overview of how fossils form.

3 minutes, September 2019
Biology
Video Thumb - What is An Allele?

Quick Definition: What Is An Allele?

An allele is an alternate version of a gene within a population. Here we look at examples of exactly what that means.

3 minutes, August 2019
Biology
Survival of the fittest

Survival of the Fittest?

Here we look at what the phrase “Survival of the fittest” really means.

7 minutes, July 2019
Evolution
Video thumb - What is a Molecule?

What Is A Molecule?

A molecule can be roughly thought of as any group of atoms stuck together. Here you will learn some important details.

8 minutes, June 2019
Chemistry
video thumb - What is Metabolism?

What Is Metabolism?

Here you will learn about cellular metabolism and the Krebs cycle.

7 minutes, May 2019
Biology
video thumb - What are Atoms Made of?

What Are Atoms Made Of?

While we used to think atoms were fundamental particles, we now know they are made of smaller parts still.

7 minutes, January 2019
Chemistry
video thumb - What is an Atom and How Do We Know?

What Is An Atom And How Do We Know?

Ever wonder how we actually know that atoms exist? Here we’ll learn what atoms are and exactly how scientists went about figuring all of this out.

12 minutes, September 2018
Chemistry
video thumb - How to Spot an Alien, According to NASA!

What Is Life… According To NASA?

What exactly is life and how could we know if we ever spotted an alien? NASA has some ideas!

10 minutes, December 2017
Biology
video thumb - Soft Tissue Found Inside a Dinosaur Bone!

Soft Tissue Found Inside A Dinosaur Bone!

Did scientists really discover soft tissue inside a dinosaur bone? Find out here, and learn what this might mean!

8 minutes, September 2017
Biology
video thumb - What is a Chromosome?

What Is A Chromosome?

Ever confuse DNA, Genes, and Chromosomes? If so, don’t worry, we straighten all of this out right here!

5 minutes, July 2017
Biology
video thumb - Did Dinosaurs Ever Live Alongside Humans?

Did Dinosaurs Ever Live Alongside Humans?

You may have read online that dinosaurs once lived alongside humans. Here we look at what the real scientific observations suggest.

7 minutes, March 2017
Biology
video thumb - What Caused Life's Major Evolutionary Transitions

What Caused Life’s Major Evolutionary Transitions

Explore the fascinating transition from early cells to multi-celled animals and see the experiments that helped us understand how it happened.

9 minutes, December 2016
Biology
video thumb - What Is the RNA World Hypothesis?

What Is The RNA World Hypothesis?

The RNA World Hypothesis proposes that chains of RNA were the first living things on Earth. Here you’ll find out why.

7 minutes, August 2016
Chemistry
video thumb - How Does Cooperation Evolve?

How Does Cooperation Evolve?

If evolution is all about “survival of the fittest”, how does cooperation evolve?

3 minutes, June 2016
Biology
video thumb - How Does New Genetic Information Evolve?

How Does New Genetic Information Evolve? Part 2: Gene Duplications

Here we see how new genetic information evolves via gene duplications followed by point mutations.

8 minutes, March 2016
Biology
video thumb - What Was The Miller-Urey Experiment?

What Was The Miller‑Urey Experiment?

If the origin of life happened before scientists were around to observe it, how can our origin be studied with the scientific method? This question is answered in our overview of the Miller-Urey experiment.

7 minutes, October 2015
Biology
video thumb - How Does New Genetic Information Evolve? Part 1: Point Mutations

How Does New Genetic Information Evolve? Part 1: Point Mutations

Point mutations are the simplest natural mechanisms known to increase the genetic information of a population.

7 minutes, September 2015
Biology
video thumb - What is Chemical Evolution?

What Is Chemical Evolution?

The origin of life is still a mystery, but the careful study of chemical evolution is beginning to provide us with possible answers.

9 minutes, May 2015
Chemistry
video thumb - What is the Evidence for Evolution?

What Is The Evidence For Evolution?

Biologists teach that all living things on earth are related. Is there any solid evidence to back this claim? Join us as we explore the facts!

11 minutes, October 2014
Biology
video thumb - Does the Theory of Evolution Really Matter?

Does The Theory Of Evolution Really Matter?

Here you will follow three scientists as they use evolutionary theory to solve mysteries in food production, medicine, and environmental protection.

9 minutes, July 2014
Biology
video thumbnail - Can Science Explain the Origin of Life?

Can Science Explain The Origin Of Life?

The theory of evolution tells us how life diversified after it got started, but how did the first evolving creatures come about?

7 minutes, March 2014
Biology
video thumb - What is Evolution?

What Is Evolution?

Here we look at the basics of what biological evolution is, and how it works.

8 minutes, January 2013
Biology
video thumb - What Exactly is a Gene?

What Exactly Is A Gene?

You hear about genes all the time in the news and in the movies, but what exactly is a gene? Here we learn what genes are and how they evolve.

4 minutes, November 2012
Biology
video thumb - What is DNA and How Does it Work?

What Is DNA And How Does It Work?

Ever wish you understood genetics? It’s way easier than you think. Mastering the basics only takes 5 minutes.

5 minutes, August 2012
Biology
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