Understanding Map Projections: Why the UN is Shifting to the Equal Earth Map

Gist The United Nations General Assembly has adopted a resolution to replace the traditional Mercator map with the 2018 Equal Earth design in an effort to accurately depict the true size of the African continent. This cartographic shift aims to correct centuries of visual distortion that exaggerated polar regions while diminishing the scale of equatorial landmasses. For civil services aspirants, understanding the mechanics of map projections is essential for interpreting geographic data without spatial or geopolitical bias. Background The Earth is a geoid—an imperfect sphere that bulges at the equator due to its rotation and is warped by lunar gravity and varied landmasses. Translating this three-dimensional reality onto a two-dimensional flat surface requires mathematical transformations known as projections, and every projection forces a trade-off between preserving area, shape, distance, or direction. Since 1569 , the default global map has been the Mercator layout, a conformal, cylindrical projection designed specifically for maritime navigation. However, the mathematical formula required to keep navigation lines straight exponentially inflates the visual size of landmasses as they approach the poles. Consequently, the Global South, particularly Africa…