Nano technology is the study and use of structures between 1 to 100 nanometers. To give you an idea of just how small that is, a human hair is about 60,000 nanometers in diameter and a sheet of paper is about 100,000 nanometers thick.

Nano technology allows scientists to work on the scale of molecules to create and explore the biological and material worlds. By manipulating the individual atoms and molecules, scientists can create systems that can remove contaminants and pollutants from the air.