How is it that the same animal, living in the same place, at the same time, evolved into two different species? As part of a larger series, an engaging video explains the rise of the chalicothere, the split in evolution, and eventually...

Scientists believe red hair and pale skin evolved in northern Europe because it helped humans synthesize vitamin D easier than those with more melanin in their skin. Viewers explore many interesting facets of evolution in a...

Between 1968 and 2002, the total number of peppered moths decreased by almost two thirds, although scientists do now know why. In the 10th video of the series, the instructor defines evolution as any changes to a gene pool. Scholars then...

Viewers explore real-world examples of both evolution and natural selection as the instructor discusses changes to the environment, mutations causing changes in phenotypes and changing the fitness in organisms, and how humans are...

About 70 percent of the genes of the stickleback fish are the same as humans. In the video, scholars further explore the stickleback fish and its history, from being removed from Loberg Lake to their change and comeback. Over time, these...

The peppered moth is featured in a video about natural selection. The narrator tells the story of Darwin's theory and then moves on to the principles behind natural selection and the different ways it works. Concepts covered include...

The heartbreaking story of Alfred Wallace's loss of collected evidence opens this documentary about the development of the theory of evolution. You will find supportive resources to use with the movie in your biology class.

After watching an engaging 13-minute video about the colorless blood of icefish, future ichthyologists examine icefish blood and non-icefish blood (blood samples are simulated with Karo syrup mixtures) to determine advantages of...

Sickle cell disease only occurs when both parents contribute the trait, and mostly in those of African descent. Where did it come from? How did it evolve? Tony Allison, a molecular biologist, noticed a connection between sickle cell and...

Got milk? Only two cultures have had it long enough to develop the tolerance of lactose as an adult. Learn how the responsible genes evolved along with the cultures that have been consuming milk. This rich film is supplied with a few...

The pocket mouse can be light brown like the sands of the desert, or dark brown like the volcanic lava flows that are interspersed throughout New Mexico's Valley of Fire. It seems that predators have weeded out light colored mice in this...

Physical and behavioral adaptations are discussed by two teen girls as monarch butterflies flutter by. They also describe the process of natural selection. With colorful animation and relatable teen language, learners are sure to adapt...

Find out how evolution really works. This video explains the concept of adaptation and natural selection to describe how evolutionary change occurs. We'll find out that natural selection is comprised of four key components; each...

What is a theory? Learners are primed for a lesson on theory, science, and the use of scientific evidence as it's used to prove evolution. This is a great video for elementary schoolers and can be used to introduce the concept of...

This video about a delicate, often controversial topic, does not argue for one area or another, but does talk about the random process versus design of an involved organ. The lecturer talks freely about how infinite complexity such as...

The lecturer describes how specific characteristics develop. In this case, he discusses eye marking. The impact of environmental factors significantly influences the likelihood of successful reproduction, as favorable genes are more...