We've heard about pygmy pigs—why not pygmy mammoths? Fossil evidence proves their existence, but the dilemma is figuring out where they lived. A video describes different theories on their evolution and migration.

Small but fierce! The tardigrades are less than a millimeter long but can survive extreme cold, extreme heat, and even being in a vacuum. A video presentation explains the unique protein these organisms use to withstand extreme situations.

They're not just pretty faces! Flamingos may look delicate, but they have adaptations that allow them to survive in areas most other organisms cannot. A video lesson in a larger ACS Reactions series describes how flamingos survive in...

Red, purple, green, blue, and white are all colors of ... animal blood! Young scholars learn about the evolution of animal blood over time in a video lesson from a comprehensive Eons series. They learn that not only has the color...

A quarry worker in southern Africa discovered the first fossil evidence that the human species originated on the continent less than 100 years ago! Evidence from the specimen indicates the first humans were not the hunters—but the prey....

Camels thrive where other animals can't survive! Interestingly enough, the camel didn't originate in the desert, but rather the rain forest. Part of an extensive PBS Eons playlist, a video presentation follows the migration and...

Flight seems like an important adaptive advantage, so why did some birds lose their ability to take to the skies? A video from the PBS Eons series explains the evolutionary paths of different species of birds while emphasizing the...

Back in the day, all birds had the ability to fly. Why would evolutionary adaptations take that away from some species? A video presentation discusses the cost of having the ability to fly and why that feature may not be ideal for...

Many believe dinosaurs were much larger than animals of today, but even the biggest dinosaur was only half the size of the average adult blue whale. Understanding why animals appear to be getting smaller starts with a discussion of...

The word camouflage was first found use in English in the 1917 edition of Popular Science magazine. Camouflage, along with many other variations, star in the second video in a four-part series about adaptations. Join the virtual...

The rock pocket mouse exists either with light colored or dark colored fur. As their habitat changes from sandy desert to lava flows the prominence of each color fur also changes. Viewers compare the visibility of each mouse's fur color...

How do animals avoid predators, including humans, if they can't move to a new habitat? The third video in a four-part series explains a recently published article on the topic of adaptations. Many mammals shift their schedules to a more...

Texas short-horned lizards shoot blood out of their eyes to deter predators. The unique adaption allows them to thrive in a hostile environment. Pupils learn more about this and other adaptations of plants, animals, and humans in the...

Talk about a sticky situation! What is spider silk, anyway? Scholars scope out the science behind one of the world's strongest substances through a video from an intriguing science series. A leading spider scientist discusses the types...

Earth's strangest creatures may be the key to finding life on other planets! Introduce biology scholars to the extreme world of extremophiles with a video from a large science playlist. From the depths of the ocean to the heart of the...

Change is good ... unless you're a tuatara! Meet Earth's oldest surviving reptile species in a fun video from an extensive science playlist. Content includes why the tuatara did not evolve and its unique anatomy.

From anteaters to zebras, why are both sexes equally represented in number? Explore a quirk in evolution with a video from a thought-provoking science playlist. The narrator shows examples of species that might only need a few males,...

What happens to a species when members become separated by changes in their environment? Present young biologists with the ultimate example species—the anole lizard. A brief video describes the origins of the multitude of anole species...

In humans, the rate of mutation from one generation to the next is between 100 and 200 mutations. Discover the role of DNA mutation in evolution with an enriching lab activity.

Many animals have methods of surviving. But did you know that opossums are not the only animals known for "playing opossum"? Watch a video that explains the unique survival techniques and behaviors of animals, including tonic immobility...

It's not every day that you end up rooting for a mouse. A breathtaking video takes scholars to the American Southwest to learn about the rock pocket mouse. It describes how mice with black fur had an evolutionary advantage in the dark...

Notothenioids are not your average fish—they contain antifreeze! An interesting video introduces the icefish, a scaleless fish with colorless blood that lives in the oceans around Antarctica. It explains how gene duplication and...

Birds, bees, flowers, trees ... and Funisia dorothea? Biology scholars journey back in time to discover more about the history of sexual reproduction. The video, one of many in a biology playlist, covers our earliest eukaryotic ancestor,...

See the world as it was—and also how it will be! A riveting video from a vast biology and earth science playlist takes viewers back in time to see how supercontinents formed, broke apart, and formed again. The resource includes a sneak...