UN ‘Correct the Map’ Resolution: Mercator vs Equal Earth Projection Explained

The resolution: The UN General Assembly adopted “Correct the map: rebalancing global cartographic representation and promoting equitable representation of the world's regions, particularly Africa”. The final resolution number is A/RES/80/307.

Objective: It seeks wider awareness of distortions produced by commonly used world-map projections and encourages cartographic representations that better preserve the proportional size of continental land areas.

Not a compulsory replacement: The resolution does not establish one legally mandatory world map. During introduction of the draft, Togo expressly stated that the proposal neither condemns Mercator nor imposes one projection for every use. It recognises that different projections serve different purposes.

Legal nature: Like most UN General Assembly resolutions of this character, it is non-binding. It primarily carries political, normative, educational and institutional significance rather than creating an enforceable international obligation.

Curved Earth versus flat paper: Earth is a three-dimensional body that is approximately an oblate spheroid. A conventional map is two-dimensional.

Map projection: A map projection is a mathematical system for converting geographic coordinates—latitude and longitude—from Earth's curved surface to positions on a flat plane.

The fundamental problem: A curved surface cannot be flattened across the whole world without stretching, compressing, tearing or otherwise distorting some geographical properties.

Four important properties: Cartographers commonly consider area, shape, distance and direction. A projection may preserve one of these very well, but normally does so by sacrificing accuracy in others. National Geographic similarly notes that all map projections involve trade-offs between such spatial properties.

UPSC takeaway: The correct question is therefore not “Which is the perfectly accurate world map?” No such flat world map exists. The correct question is “Which projection is most suitable for the purpose for which the map is being used?”

By projection surface: Traditional classification often groups projections into cylindrical, conical and planar or azimuthal projections.

Cylindrical projection: Imagine a cylinder around the globe. Mercator is the best-known example.

Conical projection: A cone is conceptually placed over part of the globe. Such projections can be useful for mid-latitude regions extending predominantly east-west.

Planar or azimuthal projection: The globe is represented on a flat plane touching or conceptually related to one point. Polar maps commonly use this approach.

By property preserved: A second, extremely important classification distinguishes conformal, equal-area, equidistant and compromise projections.

Meaning: A conformal projection preserves local angles and therefore represents small shapes accurately.

Trade-off: It does not necessarily preserve area. A continent may retain a recognisable outline while its apparent size becomes greatly exaggerated.

Example: Mercator is conformal. This property helped navigators because directions and local angular relationships were important for sailing.

Prelims trap: “Conformal” does not mean that all continents retain their correct relative sizes.

Meaning: An equal-area projection preserves area proportion. If one geographical region has twice the actual area of another, it will occupy twice the map area.

Trade-off: Shapes, angles or distances may be distorted in order to preserve area.

Examples: Equal Earth, Mollweide, Gall-Peters-type cylindrical equal-area projections and Lambert Azimuthal Equal Area belong to the wider family of area-preserving projections.

Best use: Equal-area maps are especially useful for thematic mapping where quantities are being compared across geographical areas—for example population density, forest cover, land-use patterns, agricultural area or climatic zones.

Meaning: An equidistant projection preserves specified distances rather than all distances everywhere.

Important limitation: No flat world map can maintain correct distance between every possible pair of points.

Azimuthal Equidistant: This projection preserves both distance and direction from its central point. It is therefore particularly useful when relationships to a particular centre are important.

Interesting UN connection: The United Nations emblem uses an azimuthal equidistant projection centred on the North Pole. The UN states that its map extends to 60° south latitude.

Meaning: A compromise projection does not perfectly preserve one particular property such as area or angle. Instead, it attempts to keep several kinds of distortion at visually acceptable levels.

Robinson projection: It became popular because of its visually balanced representation of the world.

Winkel Tripel: This is another important compromise projection. It is neither conformal nor equal-area but has relatively low overall scale and area distortion. It has been widely used for general-reference world maps.

Purpose matters: For a general school wall map, a cartographer may prefer a visually balanced compromise. For statistical comparisons, an equal-area map may be preferable. For navigation, a conformal map may be more useful.

Origin: Gerardus Mercator introduced his projection in 1569. He was a Flemish geographer and cartographer.

Type: Mercator is a cylindrical conformal projection. Meridians are represented as parallel vertical lines, while parallels of latitude are horizontal and become increasingly spaced towards the poles.

Navigation advantage: Its great historical innovation was that a line of constant compass bearing could be represented by a straight line.

Such a line is known as a rhumb line or loxodrome.

A sailor could therefore select a compass bearing, draw the corresponding line on a Mercator chart and follow that bearing.

Critical distinction: A rhumb line is normally not the shortest route between two distant points on Earth. The shortest surface route generally follows a great-circle path.

Scale increases with latitude: Mercator must stretch the map increasingly as latitude rises in order to retain its conformal property.

Polar exaggeration: Consequently, regions close to the poles receive much greater apparent area than equally large regions near the Equator.

Poles themselves: In a theoretical Mercator projection, the poles cannot actually be represented because the stretching tends towards infinity as latitude approaches 90°.

Africa-Greenland example: Africa covers a little over 30 million sq km, compared with roughly 2.17 million sq km for Greenland—making Africa approximately 14 times larger. Yet conventional Mercator world maps can make Greenland appear comparable in size to Africa.

Geographical pattern: The distortion is latitude-dependent. High-latitude North America, Europe, Russia and Greenland appear enlarged, while tropical Africa, South Asia and Latin America appear smaller relative to them.

No—purpose is crucial: Mercator is not a defective projection when used for purposes for which its properties are valuable.

Navigation: Its preservation of local angles and straight rhumb lines historically made it highly useful for maritime navigation.

Area comparison: It becomes inappropriate when viewers use the apparent areas of continents on the map to infer their real relative sizes.

Central lesson: The problem is therefore less “Mercator versus science” and more the use of a navigation-oriented projection for purposes such as general geographical education or area comparison.

This is also the position reflected in the UN debate: Togo acknowledged the historical usefulness of Mercator for navigation while arguing against treating it as a universal map for every purpose.

Perception of the world: Maps are educational and cultural objects. Repeated exposure to one projection can shape a person's mental image of relative continental size.

African argument: The African-led initiative argues that the widespread use of Mercator in education and general-reference contexts has visually diminished Africa and other regions near the Equator while enlarging high-latitude parts of Europe and North America.

Colonial interpretation: Critics link this visual hierarchy to historical Eurocentric or colonial perceptions because Mercator became globally influential during the centuries of European maritime expansion.

Important qualification: The mathematical distortion itself is produced by latitude and the geometry of the projection; it was not a mathematical rule specifically designed to make Africa small. The political argument concerns the subsequent widespread use and cultural effect of a projection whose technical purpose was navigation.

UPSC Mains approach: A balanced answer should distinguish the objective mathematics of projection distortion from the social and political interpretation of how particular maps have been used.

Definition: Equal Earth is an equal-area pseudocylindrical projection designed for world maps.

Creators: It was developed by Bojan Šavrič, Tom Patterson and Bernhard Jenny and introduced in 2018.

Inspiration: Its visual form was inspired by the Robinson projection, but unlike Robinson, Equal Earth preserves the relative area of geographical regions.

Pseudocylindrical meaning: In a pseudocylindrical projection, parallels are typically represented as straight lines while most meridians curve rather than remaining parallel straight lines as in a basic cylindrical projection.

Visual advantage: Equal Earth's curved outer shape gives viewers a visual suggestion of Earth's spherical form while retaining proportional area.

No: Equal Earth corrects the particular problem of relative area, but it does not abolish projection distortion.

What it preserves: The map area occupied by countries and continents remains proportional to their actual area.

What can change: Shapes, angles, distances and directions can still be distorted.

Exam-critical principle: No flat world map simultaneously preserves area, shape, distance and direction everywhere.

Therefore, describing Equal Earth as a “perfect map” would itself be incorrect.

Robinson: Robinson is a compromise projection. It was designed to create a visually pleasing global map by balancing different distortions rather than preserving exact area.

Equal Earth: Equal Earth takes inspiration from Robinson's overall visual appearance but adds the mathematically important property of exact relative-area preservation.

UPSC distinction: Robinson = compromise; Equal Earth = equal-area.

Common characteristic: Both seek to represent land areas in their proper relative proportions.

Gall-Peters characteristic: Gall-Peters is commonly described as a cylindrical equal-area projection. Preserving area can make continental shapes appear vertically stretched or compressed.

Equal Earth approach: Its designers sought an equal-area world map with shapes that viewers would find more visually familiar and balanced. The official Equal Earth project states that it was conceived as a visually pleasing equal-area alternative.

Key lesson: Equal-area does not prescribe one unique map shape. Many different projections can preserve area while distributing shape distortion differently.

Thematic and statistical maps: Equal-area projections are preferable when comparison of area is essential—for example land cover, forest extent or distribution of phenomena.

Navigation and direction: Conformal projections such as Mercator are useful when local angles and constant compass bearings matter.

General-reference world maps: Compromise projections such as Robinson or Winkel Tripel attempt to distribute distortion in a visually balanced way.

Distance from one point: Azimuthal Equidistant projections are useful when accurate distance and direction from a chosen centre are important.

Polar thematic studies: Lambert Azimuthal Equal Area and related planar projections may be appropriate depending on the property being studied.

UPSC principle: Projection choice should be purpose-specific rather than universal.

Broader principle: The resolution favours greater use of cartographic approaches that accurately represent relative continental areas.

Equal Earth as an option: Equal Earth is specifically recognised as a relevant equal-area approach, particularly where the size of landmasses matters.

No monopoly: The resolution nevertheless recognises the diversity of projections and does not require Equal Earth for every mapping application. Togo's presentation of the draft explicitly stressed this limitation.

This qualification is particularly important because headlines saying that the UN has simply “adopted a new world map” can give an incomplete impression of what the General Assembly actually decided.

African leadership: Togo introduced the draft on behalf of the Group of African States.

African Union: The initiative has received institutional backing from the African Union.

Civil-society campaign: Africa No Filter and Speak Up Africa have also promoted the “Correct the Map” campaign, arguing for greater use of equal-area maps in schools, institutions and digital platforms.

Why Africa?: The continent is particularly central to the debate because Mercator's high-latitude enlargement makes its immense actual area look relatively smaller when compared with northern landmasses.

Result: The resolution received 164 votes in favour, one against and six abstentions.

Against: The United States was the only country voting against.

Abstentions: Estonia, Georgia, Lithuania, Moldova, Serbia and Ukraine abstained.

US position: The United States argued that the issue had been framed as part of a larger ideological agenda and questioned whether the General Assembly should devote attention to it.

Neutral UPSC reading: The vote demonstrates overwhelming support for the principle of more representative cartography, but the objections also illustrate how an apparently technical subject such as mapping can acquire political and historical meaning.

Support for the objective: India voted in favour and welcomed efforts to promote more accurate cartographic practices.

Key reservation: India's representative stated that the resolution should be understood as supporting equal-area projections generally, not as endorsing Equal Earth or any other single projection.

Technological neutrality: India argued that different projections serve different purposes and that countries, institutions and cartographers should remain free to choose an appropriate methodology.

Why this is scientifically sound: A navigation map, statistical map, polar map and general-reference map have different requirements. Selecting one universal projection would ignore these functional differences.

No: They are fundamentally different concepts.

Projection: Determines how Earth's curved geometry is mathematically transferred to a flat surface.

Political cartography: Determines which boundaries, territories, place names and sovereignty claims are displayed.

Changing from Mercator to Equal Earth changes how geographic space is geometrically represented; it does not automatically decide where an international boundary lies.

UN clarification: Togo stated during presentation of the resolution that the initiative concerns proportional representation of continental areas and not delimitation, territorial status or recognition of boundaries.

Indian standard: India's 2021 geospatial guidelines state that for political maps of India at any scale, Survey of India-published maps or Survey of India digital boundary data are the standard.

Survey of India's role: Survey of India is India's national mapping organisation under the Department of Science and Technology. Its functions include surveying and mapping, demarcation and depiction of India's external boundaries and advising on interstate boundaries.

UPSC distinction: Students should therefore never assume that international approval of a particular projection constitutes approval of every boundary depicted on any map made with that projection.

Geospatial data: This includes location-based information connected with natural and human-made features, boundaries, terrain, infrastructure and other spatial phenomena.

2021 liberalisation: India's Guidelines for acquiring and producing Geospatial Data and Geospatial Data Services significantly liberalised domestic collection, generation, dissemination and use of geospatial information while retaining specified safeguards.

Boundary standard: Political maps remain subject to Survey of India boundary standards.

Broader significance: Modern cartography is no longer merely about printed atlases. It underpins GIS, satellite mapping, navigation, logistics, urban planning, disaster management, agriculture, defence and location-based digital services.

Yes: A variant known as Web Mercator became the de facto standard for many web-mapping services because it provides a convenient rectangular coordinate system and allows efficient zooming and map tiling.

But the distortion remains: At continent or global scale, high-latitude landmasses remain greatly exaggerated.

Digital solution: Interactive maps can increasingly shift between flat projections and 3-D globe representations, reducing the necessity of treating any one static world projection as universal.

UPSC angle: Advances in GIS and digital mapping make projection literacy even more important because a user may see the same dataset transformed differently depending on the coordinate reference system and projection chosen.

GIS: A Geographic Information System stores, analyses and visualises geographically referenced information.

Coordinates: Raw positions may be stored through latitude-longitude on a geographic coordinate system, while spatial analysis and mapping often require a projected coordinate system.

Projection choice matters: Calculating area using an unsuitable projection may introduce errors. Likewise, distance, direction and shape analyses require projections appropriate to the task.

UPSC connection: Map projection is therefore not merely an old cartographic topic. It remains fundamental to satellite imagery, land surveying, environmental monitoring, disaster risk mapping, urban planning and digital governance.

Mental map: Students develop an internal perception of the world partly from maps repeatedly seen in classrooms and textbooks.

Area misconceptions: If one projection is presented without explaining its limitations, students may assume apparent size equals actual size.

Resolution's approach: The UN initiative encourages not simply replacing one picture with another but improving understanding of projection methods, their strengths, limitations and appropriate applications.

Better geographical literacy: Teaching several projections can demonstrate that maps are models designed for particular purposes rather than exact miniature copies of Earth.

Representation and power: Maps determine what is placed at the centre, how large regions appear, where a map is cut and how boundaries are depicted. These choices can influence perception even when the underlying mathematics is legitimate.

Colonial legacy debate: African advocates argue that continued dependence on Mercator for general world maps reinforces inherited patterns in which Europe and northern regions appear visually dominant.

Counterpoint: Mercator's original scientific value for navigation is independent of those subsequent political interpretations.

Balanced conclusion: The current debate is therefore best understood as a combination of cartographic science, geographical education and the politics of representation—not simply as a dispute between a “false” old map and a “true” new one.

Mercator: Cylindrical + conformal + preserves local angles + rhumb lines straight + severe high-latitude area distortion.

Equal Earth: Pseudocylindrical + equal-area + introduced in 2018 + preserves relative area + does not preserve all shapes/distances/directions.

Robinson: Compromise projection + visually balanced + not equal-area.

Winkel Tripel: Compromise projection + low overall distortion + useful for general-reference world maps.

Azimuthal Equidistant: Preserves distance and direction from its centre; the UN emblem uses a North-Pole-centred version.

Lambert Azimuthal Equal Area: Planar equal-area projection useful for thematic mapping of hemispheres and some polar regions.

Promote projection literacy in school geography so students understand why every flat map involves distortion instead of learning one world map as an exact representation of Earth.

Use equal-area projections for thematic and statistical maps where comparing the relative size of geographical regions is essential.

Retain conformal, equidistant and other specialised projections when their properties better suit navigation, surveying or spatial analysis.

Encourage atlases, educational institutions and digital platforms to disclose the projection being used and its principal limitations.

Preserve technological neutrality rather than treating one projection as universally superior for every cartographic purpose.

Strengthen geospatial education, GIS skills and open access to reliable spatial datasets in developing countries.

Maintain a clear distinction between projection choice and political-boundary representation; in the Indian context, authoritative Survey of India boundary standards should continue to govern political maps.

Increasing use of interactive globe visualisation can complement flat maps and allow users to understand the world without depending entirely on a single static projection.