The Equal Earth projection replaces the Mercator projection in classrooms and general use.
The Equal Earth projection replaces the Mercator projection in classrooms and general use.
#Mercator
#Latitude-Longitude
#Maps-that-Lie
#Equal-Earth-projection
The map I have on my wall is a Robinson projection (or a very close pseudocylindrical derivative). While it shares a similar visual silhouette with Equal Earth—straight horizontal latitude lines, flat pole lines, and gently bowed meridians—there is a fundamental mathematical difference in how they handle landmasses:
1. Compromise vs. True Equal-Area
Your Map (Robinson): Developed in 1963 as a "compromise" projection. It does not preserve true area or true angles. Instead, it balances distortions purely by eye so continents look natural to the viewer. Because it is not an equal-area map, landmasses closer to the poles are still exaggerated in size (Canada, Russia, and Greenland are still visually inflated compared to the equator, though far less drastically than on a Mercator).
The New UN Map (Equal Earth): It is mathematically equal-area. Every square centimetre on the paper represents the exact same surface area on Earth.
2. Relative Proportions
Africa & the Tropics: On your Robinson map, Africa and South America are reasonably well-proportioned, but on the Equal Earth map, equatorial and southern landmasses appear even more prominent and voluminous. Africa is shown in its true physical scale: roughly 14 times the size of Greenland.
High Latitudes (Greenland, Canada, Northern Europe): On your map, Greenland still appears relatively large compared to South America or Africa. On the Equal Earth projection, high-latitude landmasses visibly shrink to their true relative surface areas.
3. Parallels and Meridian Geometry
To achieve true equal-area representation without the severe, vertical "funhouse mirror" stretching of the controversial Gall-Peters projection, Equal Earth subtly alters the grid geometry:
The parallels of latitude compress closer together as they approach the poles.
The outer meridians bow out with a slightly different mathematical curve inspired by the Robinson projection, maintaining recognisable continental shapes while keeping surface area ratios exact.
In short: my wall map abandoned Mercator's extreme poleward distortion for visual balance, whereas the new Equal Earth projection formalises that visual appeal with strict mathematical equality of area.

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