Nanotechnology involves controlling and manipulating matter at the atomic and molecular scale (typically 1-100 nanometers). It can be used to deal with problems across many fields by exploiting properties that emerge at the nanoscale. Some potential applications of nanotechnology include more effective drug delivery systems, new diagnostic tools in medicine, more efficient energy production and storage, and stronger/lighter materials for vehicles and aerospace uses. The document provides examples of current and potential future uses of nanotechnology in fields like medicine, energy, information technology, and heavy industry.