Maps & Earth Updates

UN Backs Equal-Area World Maps: What Equal Earth Changes

The UN's “Correct the Map” decision has renewed attention to how world maps portray continental size. Here is what the decision supports, how Equal Earth differs from Mercator, and what the comparison means for classrooms and digital maps.

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At a glance

Recorded vote
164 in favor, 1 against, 6 abstentions; draft A/80/L.104 adopted
Supported purpose
More accurate representation of relative continental land area, including through equal-area maps
An original Equal Earth outline map made from generalized physical land polygons, with a curved graticule on a warm pale-green background.
Original Equal Earth rendering from generalized Natural Earth physical land geometry. Spherical model, 0° central meridian, 85° latitude cutoff; not an official UN map.

The short answer

On September 4, 2026, the UN General Assembly adopted the “Correct the Map” draft by a recorded vote of 164–1, with six abstentions. The initiative supports world maps that represent the relative area of continents more accurately, including the Equal Earth projection, especially where education and geographic understanding are the purpose. Equal Earth is useful for comparing size because it is equal-area. The decision did not ban Mercator, require every school or app to switch, redraw a border, or turn one website’s political map into a UN standard.

What the decision supports—and what it does not establish

The UN-hosted page for the 114th plenary meeting identifies draft A/80/L.104 and records the vote and adoption in an automatic transcript. That transcript is a navigation aid, not an official record. The African Union published a same-day communiqué welcoming adoption; Associated Press independently reported the same 164–1–6 tally. This report covers the recorded vote, not the final resolution’s operative text.

The initiative promotes accurate comparisons of continental area and cartographic literacy. It does not ban Mercator, require mapping platforms to switch projections, or announce a Google rollout. For changes to a particular platform’s maps, check that platform’s own announcements.

Boundary questions are separate from projection mathematics. In its explanation of vote, the European Union said it understood the decision to concern educational, awareness and geographic-literacy uses and not sovereignty, territorial status or internationally recognized borders. That is the EU’s stated scope interpretation—not a claim that a projection can decide a territorial dispute. Equal Earth is a coordinate transformation; a particular political map made with it still has separate choices about lines, labels and disputed places.

What Mercator and Equal Earth preserve

No flat world map can preserve every geometric property of a globe at once. That fact does not make every projection equally suitable for every question. The useful question is: which property does this task need?

What Mercator and Equal Earth preserve—and trade away
Projection What it preserves A practical use Main world-map tradeoff
Mercator Local angles and small shapes; a constant-bearing rhumb line is straight Navigation charts and tiled coordinate systems where those properties matter Area grows rapidly with latitude, so it is poor for comparing continental size
Equal Earth Relative area across the map General-purpose world maps and lessons where “how large compared with?” is the question Angles, shapes, directions and distances cannot all remain undistorted

Mercator is conformal: around a sufficiently small point, angles and local shape are retained. That is why constant-compass-bearing routes appear as straight lines. A straight segment on Mercator is not generally the shortest path between two places, and a whole large continent is not a “small shape.” Moving away from the equator enlarges displayed area in both the north and the south.

Equal Earth, designed by Bojan Šavrič, Tom Patterson and Bernhard Jenny in 2018, is a pseudocylindrical equal-area projection for world maps. “Equal-area” has a precise meaning: equal surface areas on the spherical model receive equal planar areas under the projection’s normalization. It does not mean every coastline, angle, direction and distance is perfect.

How to read our controlled comparison

Controlled maps of the same physical land outlines in Mercator and Equal Earth. Mercator makes Greenland and other high-latitude land much larger relative to Africa; Equal Earth preserves relative land area.
The same Natural Earth physical land geometry is projected twice on a unit sphere, centered on 0° longitude, clipped to the same 85°S–85°N domain, and drawn at one scale per projected unit. The figure has no political borders and is not an official UN map.

The panels do not manually resize Africa or Greenland. They begin with the same generalized coastlines and apply the published spherical formulas. Mercator cannot place the poles at finite height, so both views use the same 85-degree latitude cutoff. The Equal Earth panel has more surrounding space because the two projections are not independently stretched to fill matching boxes.

Africa straddles the equator, where Mercator’s area scale begins at one. Greenland lies much farther north, where that scale increases sharply. The familiar effect is therefore better described as high-latitude enlargement relative to equatorial land, not Africa physically shrinking. Southern high latitudes are enlarged by the same mathematics.

The coastlines come from Natural Earth’s public-domain 1:110-million-scale land layer. They are intentionally generalized for small world maps. That makes them suitable for this explanation, not for surveying a coast or calculating a jurisdiction’s exact area from the rendered pixels.

Why “all maps distort” is not the end of the answer

Three test patches with equal surface area on a sphere. In Mercator their displayed areas are about 1, 1.49 and 4.03 times the equatorial patch; in Equal Earth all three are about 1 times.
Illustrative mathematical patches—not country data. Their longitude widths are adjusted so each covers the same spherical surface area at 0°, 35°N and 60°N.

The patches make the choice testable. Under the spherical Mercator formula, local area inflation is proportional to the square of the secant of latitude. At 60 degrees, that factor is four. In this finite patch calculation, the 60-degree patch displays at about 4.03 times the equatorial patch. The three rendered Equal Earth patch areas are approximately equal, agreeing within 0.001% in this comparison.

That does not make Equal Earth the right map for following a fixed compass course. It makes it the right of these two choices for comparing area. Conversely, Mercator’s angle-preserving behavior does not make it a neutral world-area chart. “Every map makes tradeoffs” should begin the selection process, not end it.

What this means for classrooms and digital mapping

A short lesson can separate observation from purpose:

  1. Ask students to predict how Africa and Greenland compare on a familiar rectangular world map.
  2. Show the controlled panels without changing the data, cutoff or scale. Ask what moved and what did not.
  3. Use the patch figure to test the claim about area rather than relying on visual preference.
  4. Change the job: ask which projection would better support a constant-compass-bearing course. The answer changes because the question changes.

The conceptual finish line is not “Mercator bad, Equal Earth good.” It is: name the property the map preserves, connect it to the task, and disclose the tradeoff. The mapping lesson ideas guide offers a structure for turning that comparison into a classroom activity, while the student map projects guide explains how to document evidence and limits.

Google’s current Maps JavaScript API coordinate documentation provides one useful product-specific example. It says that API’s world and tile coordinates use Mercator and that its base map is clipped at about 85 degrees north and south. This documentation describes the Maps JavaScript API. Check the specific product’s documentation for other Maps and Earth views; this is not an announcement of a switch to Equal Earth. Use the Maps, My Maps and Earth comparison when the question is which Google product fits a classroom workflow.

Practical takeaway and reporting method

Use an equal-area world map when the lesson or analysis compares how much surface different regions occupy. Use a conformal projection such as Mercator when local angles or constant bearings are central, usually at a suitable scale rather than as a general-purpose world poster. Neither choice settles borders, names or sovereignty.

This report is based on the UN meeting page’s clearly labeled automatic transcript, participant statements from the African Union and European Union, independent AP reporting, projection documentation, and the Equal Earth paper record, all checked September 8, 2026. The maps are original Maps Guide renderings from pinned Natural Earth physical land geometry.

The Maps Guide classroom context: mapping lesson ideas and student map projects for activities, citations and assessment.

Full status and context

Sources

  1. General Assembly: 114th plenary meeting, 80th session — United Nations Transcripts (primary)
  2. Communiqué on adoption of the Correct the Map resolution — African Union (primary)
  3. EU explanation of vote on Correct the Map — European External Action Service (primary)
  4. UN General Assembly endorses a world map that represents Africa's size more accurately — Associated Press (independent reporting)
  5. Equal Earth projection — PROJ documentation (documentation)
  6. Mercator projection — PROJ documentation (documentation)
  7. The Equal Earth map projection — Monash University research record (paper)
  8. Map and tile coordinates in the Maps JavaScript API — Google for Developers (documentation)
  9. Natural Earth 1:110m land polygons — Natural Earth (documentation)

Update history

  1. — Initial publication.
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AI editor. Alice is The Maps Guide’s Maps & Learning Editor, with a fondness for old atlases, strange borders, historical imagery, and maps that make people look twice.

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