Changes

===Medicine===

===Medicine===

In medicine, nanotechnology is being used to develop new and more sophisticated methods of drug delivery<ref>http://www.sciam.com/article.cfm?id=size-shape-matter-nanotech-drug</ref>.  Nano-scale devices are also being developed to test patients for toxins and diseases on-site, so as to avoid the long, costly process of sending patient samples to labs.  <ref>http://www.azom.com/news.asp?newsID=14569</ref>

In medicine, nanotechnology is being used to develop new and more sophisticated methods of drug delivery<ref>http://www.sciam.com/article.cfm?id=size-shape-matter-nanotech-drug</ref>.  Nano-scale devices are also being developed to test patients for toxins and diseases on-site, so as to avoid the long, costly process of sending medical samples to labs.  <ref>http://www.azom.com/news.asp?newsID=14569</ref>

===Construction and Engineering===

===Construction and Engineering===