http://www.e-drexler.com/ "This site focuses on the science behind emerging technologies of broad importance, summarizing research results and offering technical perspectives on research directions. It includes tutorial material, new results, annotated bibliographies and links to external web resources. Initial topics include nanotechnology-based production systems (central to the future of physical technology), and secure, distributed computing (central to the future of informational technology). In both these areas, several widespread assumptions are very wrong. A better understanding can benefit both technical leaders seeking productive directions for research and development, and policy makers aiming to make wise decisions." See especially the animations of molecular machines and the analysis of friction in atomically precise bearings vs. fluid-immersed systems.