The concept of nanotechnology was first introduced in 1959 by Richard Feynman at a meeting of the American Physical Society. Nanotechnology opens the door to an exciting new science/technology/engineering field. The possibilities for the uses of this technology should inspire the imagination to think big. Many are already pursuing such feats through medical research in cancer treatment options and environmental efforts to aid in water purification and environmental protection. The range of fields to which nanotechnology may be applied today includes "electronics, communications, automotive, aerospace, materials, chemicals, pharmaceuticals, manufacturing, energy technology, space exploration, the environment, national security, health care, and other life sciences." With emphasis on environmental issues, health care, and business/industry accomplishments, this article provides insight into some of the potential of the field of nanotechnology. (Contains 4 photos.)