Nanotechnology is a very rich field of science due to informational input by physicists, chemists, engineers, geologists and biologists. However, this book was written from a layman’s perspective and questions whether it is a new science, or, like other sciences, was already discovered and utilized by nature. Did nature, which created an entire universe made up of galaxies, the solar system, the Earth and even living beings from the smallest known entities, also create nanoparticles? It is a difficult subject to write about since compiling knowledge about nature that has not been recorded in an easily decipherable form, coupled with the possibility of some natural records having been lost during the long periods of history either by nature or us, makes most information unavailable to us. We realized that apart from nature, human beings have also knowingly or unknowingly fabricated and utilized nanoparticles for various reasons. Looking back through history and searching for the existence of nanoparticles, not visible to the eye, and nanotechnology, not yet known to us but seen in nature, has been an interesting journey for us. I hope we have made it interesting enough for the readers also.

Madhuri Sharon
September 2018