Episode 3

Why Greenland Looks Bigger Than Africa on Every Map

Africa could hold Greenland fourteen times over. Your classroom map says otherwise, and the map has been lying for more than four hundred and fifty years.

Why Greenland Looks Bigger Than Africa on Every Map

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The full episode is on YouTube, about ten minutes long.

Updated: November 14, 2026

Africa could hold Greenland fourteen times over. Your classroom map says otherwise. Picture the world map on your classroom wall. Greenland sprawls across the top of it, huge and white, looking roughly the same size as the whole continent of Africa below it. Now here are the real numbers. Africa covers about 30.37 million square kilometres. Greenland covers about 2.16 million. Africa is fourteen times bigger. The map is lying to you, and it has been lying for more than four hundred and fifty years. It was a design choice, made by one man in 1569 to solve a sailor's problem. And once you see the lie, you can never unsee it.

Fourteen Greenlands

Start with the numbers, because the numbers are almost hard to believe. Greenland is the largest island in the world that is not counted as a continent, and it is big. At about 2.16 million square kilometres, it is larger than Argentina. But Africa covers about 30.37 million square kilometres, the second largest continent on Earth after Asia. Divide one by the other and you get fourteen. You could fit fourteen Greenlands inside Africa.

Greenland is not the only place the map flatters. Russia looks bigger than Africa on the classroom map, yet Russia covers about 17.1 million square kilometres, and Africa is nearly twice that. The pattern is always the same. Places far from the equator get puffed up. Places near the equator stay honest. And that pattern has a name, and a reason, and a date.

The sailor's map

The date is 1569. The name is Gerardus Mercator, a Flemish geographer and mapmaker. That year he published a world map more than two metres wide, printed in eighteen separate sheets.

Here is the problem every mapmaker faces. The Earth is a sphere, and a map is flat. You cannot flatten a sphere without distorting something. Peel an orange and press the peel flat on a table. It tears, or it stretches, or it wrinkles. Every flat map has to lie about shape, or area, or distance, or direction. The only choice is which lie to tell. Mercator chose to tell the truth about direction, and to lie about size. On his map, the lines of longitude run straight up and down instead of meeting at the poles, and the lines of latitude get spaced further and further apart as you go north or south. The spacing is calculated so precisely that angles stay true everywhere. Any straight line drawn on a Mercator map is a line of constant compass bearing.

The price of that trick is the lie we started with. To keep the angles true, Mercator had to stretch the map more and more the further you get from the equator. At sixty degrees north, the map shows everything four times its true area. At seventy degrees north, about eight and a half times. At eighty degrees, about thirty-three times. Greenland sits between sixty and eighty degrees north, right where the stretching is at its worst. Africa straddles the equator, where the map is at its most honest. So Greenland inflates to nearly ten times its true size, Africa stays close to its real proportions, and on your classroom wall the two end up looking like equals. It is the map doing exactly what it was built to do, in a place it was never built for.

The fight for an honest map

It worked brilliantly for its real job. By the 1700s, Mercator had become the standard chart for navigation, and it still is today. Google Maps used Mercator too, and only added a globe view in 2018. In 1973, a German historian named Arno Peters decided somebody should ask. At a press conference in Bonn, he unveiled a different world map, one that kept every country at its true size. On his map, every square centimetre represents the same number of square kilometres on Earth. Greenland shrinks back down to its real size. Africa towers over it, fourteen times larger, as it should.

The Peters map fixes the size problem by breaking the shapes. Near the equator, continents get stretched tall, so Africa comes out looking long and thin. Near the poles, land gets squashed flat, so Canada and Scandinavia look like pancakes. In 2018, three cartographers published a new projection called Equal Earth, designed to keep true area while keeping continental shapes looking close to correct. In March 2026, the African Union adopted Equal Earth as its preferred map. And on the 4th of September 2026, the United Nations General Assembly voted, 164 countries in favour, to encourage the world to move from Mercator to Equal Earth in classrooms and official use. Four hundred and fifty-seven years after one man drew a map for sailors, the world started voting on a map for everybody else.

There is no perfect flat map of a round world. Mercator tells the truth about direction and lies about size. Gall-Peters tells the truth about size and lies about shape. Equal Earth splits the difference and gets both mostly right. So next time you look at the classroom wall, remember the numbers. Africa could hold fourteen Greenlands.

Sources and further reading

The facts behind this episode, from the sources that tell the story best.

Keep reading

Two books that go with this episode. If you buy through these links, the site may earn a commission at no extra cost to you.

How to Lie with Maps

Mark Monmonier

The classic on how maps distort the truth, directly behind the episode's Mercator argument.

See it on Amazon

Rhumb Lines and Map Wars: A Social History of the Mercator Projection

Mark Monmonier

The full story of Mercator's projection, the map at the center of the episode.

See it on Amazon

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