Nanotechnology involves manipulating matter at the atomic and molecular scale to build materials and devices with fundamentally new properties. It has applications in medicine such as targeted drug delivery. In the future, nanotechnology may allow manufacturing at the atomic scale inexpensively using the laws of physics. However, there are also safety and ethical concerns about unintended health effects and privacy issues from undetectable sensors. Universities offer degrees in engineering and science related to developing and applying nanotechnology.