Throughout history humans have come up with lots of different ways to build shelters for themselves. But sometimes, inspiration for better construction materials comes from nature, in structures you might not expect — like the scales on a

This video discusses the different types of fat in the human body, where they are located, and their purposes. The teacher explains the evolutionary factors that led to humans being able to store excess calories as fat, and the hormonal...

In this video, we're going to learn how diodes work. We're going to start by reviewing the basic properties of diodes, and then we'll move on to discuss how diodes are used in circuits. By the end of the video, you'll have a basic...

Birds are a vertebrate group with which we are all familiar. This beautiful and colorful series of videos explores the major characteristics, adaptations, and life cycles of this group of animals. Special emphasis is paid to the features...

This live-action video program is about endotherms. The program is designed to reinforce and support a student's comprehension and retention of the term through use of video footage, photographs, diagrams and colorful, animated graphics...