This experiment shows how to fold a square piece of paper into a water bomb (also known as an origami balloon). By carefully folding corners, tucking in flaps, and blowing air into the final pocket, ...

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 ...

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 ...