In this episode of Edzy, we delve into Chapter 4 of Class 6 Social Science, 'Timeline and Sources of History.' Join Gaurav and Swati as they explore the significance of historical timelines, the methods we use to measure time, and the various sources that inform our understanding of the past. The episode covers essential concepts such as the roles of geologists, paleontologists, anthropologists, and archaeologists in reconstructing history. Listeners will learn about the Gregorian calendar, the absence of a year zero, and how agricultural developments transformed early human societies. By the end of this episode, learners will have a clearer understanding of how history is studied and the importance of different sources in piecing together our past.