Learn what a map projection is, why they are used and what impact they have on maps GIS systems. We will taker a closer look at the popular Mercator projection and examine how the projection affects area and distance calculations. 0:00 Beginner's guide to map projections 0:37 What is a map projection? 2:24 The Web Mercator projection 2:58 Distortion in the Web Mercator projection 3:54 The size of Greenland in Web Mercator vs actual 4:21 So what? What impact does this distortion have on me? ----- Support Mango by checking out our amazing web map publication tool: ----- Hosted by: Chris Brown Leaflet Geodesy plugin featured in the video: Credit to Jason Davies for the animated transformation video: Looking for Mango elsewhere on the Internet? Twitter: Facebook: