The present volume is the fourth issue of the Almanac series entitled 'Evolution'.Thus, one can maintain that our Almanac, which has actually turned into a Yearbook, has succeeded (see below). The title of the present volume is 'From Big Bang to Nanorobots'. In this way we demonstrate that all phases of mega evolution and Big History are covered in the articles of the present Yearbook. Several articles also present forecasts about possible future developments.The main objective of our Yearbook as well as of the previous issues (see Grinin, Korotayev, Carneiro, and Spier 2011a, Grinin, Korotayev, and Rodrigue2011a, Grinin and Korotayev 2013a) is the creation of a unified interdisciplinary field of research in which scientists specializing in different disciplines could work within a framework of unified or similar paradigms, using common terminology and searching for common rules, tendencies and regularities. At the same time for the formation of such an integrated field one should use all available opportunities: theories, laws and methods. In the present volume, a number of such approaches including those which will be described below are used.