As part of evolution species branch off of others species. But what did the original limb look like? Young scientists discover the exciting study of the last universal common ancestor as they hear from specialists in multiple scientific...

Scientists noticed animals with backbones share similar bone structure despite having different forms, such as fins, arms, and wings. Young scientists gain an appreciation for evolution by understanding the history of the theory. They...

Do bats really have thumbs? Explore this, and many other intriguing topics using a short video from a great science series. Viewers learn to differentiate between analogous and homologous structures, why natural selection favors traits...

When you get to the heart of the matter, you learn a lot about an organism by studying its circulatory system! A perfect resource for a zoology or anatomy class, the simulation gives users a peek inside a variety of vertebrates to...

You may not know if that zebrafish in your fish tank is a model citizen—but it is definitely a model organism! What can we learn about ourselves from a tiny zebrafish? Discover more about the polygenic trait of skin color through a...

Dimetrodon—the dinosaur that wasn't really a dinosaur! Explore the facts about an animal that lived before the Jurassic era with a fact-filled video from Brain Scoop. The narrator shows dimetrodon's characteristics, its common ancestry...

What evidence is there for natural selection? Science sleuths examine the facts using an animated Fuse School video as part of the Evolution playlist. Content includes fossil records, physical similarities, and differences in species due...