In this video, I show you how to make a simple working model of the human respiratory system using everyday items. This hands ...

Unsure about a new design? Scientists and engineers often start with a model. With a model, you can test new ideas on a small-scale before going bigger. They are also cheaper, easier to produce, and ...

The history of the first paper airplane is largely debated. According to the Strong National Museum of Play in Rochester, N.Y., some believe the earliest paper airplanes came from China with the use ...