Art Bell welcomes author and researcher Douglas Mulhall to explore the rapidly advancing world of nanotechnology. Mulhall discusses the potential for microscopic machines to revolutionize medicine, environmental protection, and technology - as well as the risks and ethical questions they raise. Together, they examine how nanotech could reshape human life, from self-repairing materials to radical life extension, and what society must consider as it races toward a future once thought to be science fiction.