Investigate scientists' use of models to understand more about an object, concept or relationship. Explore the difference between a healthy eye and an eye affected by macular degeneration by building two models.

Investigate a unique project that uses brain waves to operate machines, and perform biofeedback experiments to control physiological processes. Control hiccups and regulate your body temperature with your mind.

Explore how to keep your heart healthy by exercising regularly, sticking to a low-fat diet and not smoking. Use mathematics to understand nutritional information about various foods.

As humans try to reach the goal of growing enough food to feed all the people, find out how biotechnology is used to help.

Experience FES or functional electrical stimulation, through the eyes of a patient who lives it. Learn how doctors gave a paralyzed patient control over her muscles.

PBS's Scientific American series sponsors this learning exercise designed to simulate functional electrical stimulation (FES), a technology which allows the recovery of control of paralyzed muscles.

Explore the use of Functional Electrical Stimulation (FES) as a breathing support strategy. Construct a working lung model that simulates the mechanics of breathing.

Investigate biotechnology design by creating a model of a one-way valve from plastic tubing. Describe the mechanical action of the valve.

This article on the history and development of the artificial heart examines past attempts at artificial heart transplant and looks at future research and development.