The Peters Controversy

In 1973, Arno Peters introduced a projection he claimed was the only fair map. The Peters projection shows countries in correct relative sizes, making Africa and South America appear far larger than on Mercator maps.

Cartographers were outraged. Peters had reinvented a projection by James Gall from 1855, and his version severely distorted shapes — continents look stretched vertically. Still, the controversy sparked a real conversation about map bias, and UNESCO along with various aid and advocacy organizations promoted the equal-area view because it showed developing nations at true size. Choosing a projection is never purely technical — it is political.