Political Atlas
Things this atlas does not know. Each entry is a question that specialists
have posed and not settled, recorded with what would actually resolve it and which
expertise the answer needs.
These are kept deliberately, rather than quietly omitted. An atlas that shows
only what it is sure of implies a confidence it has not earned, and the gaps are often where
the interesting work is. Several sit exactly where two fields fail to meet: identifying the
hyssop of the Hebrew Bible needs a botanist and a philologist of Biblical Hebrew, and neither
one settles it alone.
Grouped by the expertise recorded on each question, in the words the question itself uses. Most of these are held by a single question.
Anthropology and Pacific studies 1
Melanesia
Which islands and peoples actually belong inside Melanesia, and does the category itself still hold together?
Open Melanesia
Why It Is Open Melanesia was coined in 1832 by Jules Dumont d'Urville alongside Micronesia, to sit beside the already-established Polynesia, originally on now-rejected racial grounds. There is no general agreement even among anthropologists about where its geographical boundaries run: whether New Guinea belongs fully inside it, whether Fiji is better classified as Melanesian or Polynesian given its historical and genetic ties to both, and how to classify Torres Strait Islander communities. Modern scholarship has moved toward defining the region by shared cultural and linguistic features rather than the original racial classification, but that shift has not settled where the lines fall.
What Would Settle It A cultural or linguistic classification standard for the region that current Pacific studies scholarship agrees on and applies consistently to the contested cases (New Guinea, Fiji, Torres Strait); no such consensus standard exists yet.
Expertise Needed Anthropology and Pacific studies
Question posed in
Melanesia (Wikipedia), Definition, boundary debates section.
Archaeology and historical philology 1
Timbuktu
When Was Timbuktu Founded?
Open Timbuktu
Why It Is Open Timbuktu's traditional founding is dated to around 1100 CE by oral tradition and early Arabic chronicles such as the Tarikh al-Sudan, but no archaeological or documentary evidence fixes an exact founding year, and estimates in the scholarly literature range across more than a century.
What Would Settle It A stratigraphic excavation of the city's earliest occupation layers, or the discovery of an earlier independent written record naming the settlement, would narrow the range historians currently work with.
Expertise Needed Archaeology and historical philology
Question posed in
Encyclopaedia Britannica.
Climatology and Earth system science 1
Permafrost and Periglacial Processes
How much carbon will permafrost thaw actually release this century, and how much of it will come from abrupt rather than gradual thaw?
Open Permafrost and Periglacial Processes
Why It Is Open Permafrost holds an estimated 1,400 to 1,650 billion tons of organic carbon. Even under a high-warming scenario, only an estimated 5 to 15 percent of it is expected to be lost over decades and centuries through gradual thaw, but abrupt thaw processes (thermokarst collapse, thaw slumps) release proportionally more methane, accounting for an estimated 40 to 70 percent of the total warming impact from permafrost carbon, and abrupt thaw remains far harder to model and quantify than gradual thaw. Vegetation regrowth is very unlikely to offset the emissions either way. The range between the gradual-thaw and abrupt-thaw estimates is wide enough that the century-scale climate impact is not yet pinned down.
What Would Settle It Long-term field monitoring of abrupt-thaw sites across the permafrost zone, paired with permafrost carbon models that fully incorporate abrupt thaw rather than gradual thaw alone.
Expertise Needed Climatology and Earth system science
Question posed in
Permafrost (Wikipedia), Climate change and carbon feedback section.
Comparative education and the history of geography teaching, not earth science. 1
Continents
How many continents are there: five, six or seven?
Open Continents
Why It Is Open The physical landmasses are not in dispute, but where the lines are drawn between them is a matter of convention that differs by educational tradition rather than by geology. The seven-continent model this atlas uses (treating Europe, Asia, North America and South America as four separate continents) is standard in the United States, the United Kingdom, China and India. A six-continent model combining Europe and Asia into Eurasia is standard in Russia and much of eastern Europe. A different six-continent model combining North and South America into a single American continent is standard in much of Latin America and Spain. A five-continent model, familiar from the five rings of the Olympic flag, combines the Americas into one and excludes Antarctica as uninhabited. No geological survey settles which grouping is correct, because the disagreement is about classification, not about where any coastline actually lies.
What Would Settle It Nothing within geography itself; the count is a pedagogical and cultural convention rather than an empirical question, so no future survey or measurement resolves it. What would change the entry is a documented shift in which convention is most widely taught, which is a question for comparative education research rather than earth science.
Expertise Needed Comparative education and the history of geography teaching, not earth science.
Question posed in
United States Geological Survey.
Not Yet Classified 3
Europe
Where does Europe end and Asia begin?
Open Europe
Why It Is Open Europe and Asia form one continuous landmass, Eurasia, with no continuous physical barrier separating them. The conventional line runs along the Ural Mountains, the Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea and the Turkish straits, but this is a human convention rather than a physical fact, and the modern division reflects East-West cultural, linguistic and ethnic differences that vary on a spectrum rather than falling at a sharp line.
What Would Settle It Nothing in physical geography can resolve this, since the boundary is conventional by construction; what would change the answer is a shift in which convention geographers, national governments and international bodies choose to follow, which has already moved more than once historically.
Question posed in
Europe (Wikipedia), Definition section, boundary description.
Australia
Is Australia alone, or the wider region of Oceania, the seventh continent?
Open Australia
Why It Is Open Geographers use the term Oceania for a region that includes the continent of Australia together with most of the Pacific island countries and territories, and the seven-continent model's own seventh slot is written by some sources as "Australia/Oceania", treating the two labels as interchangeable. Continents themselves are identified by convention rather than by any strict criterion, so whether the seventh continent is the single-nation Australian landmass or the wider multi-nation Oceania region is a live difference in convention, not a factual dispute with a settled answer.
What Would Settle It A single, universally adopted convention for what counts as a continent, which does not currently exist; different countries' school curricula and different atlases already choose differently (a six-continent "Australia/Oceania" model is taught in parts of Europe, a seven-continent model naming Australia alone elsewhere).
Question posed in
Continent (Wikipedia), Area and population section, Oceania definition.
Australia
Is Zealandia, the largely submerged landmass in the southwest Pacific, an eighth continent?
Open Australia
Why It Is Open In 2017 a team of eleven geologists from New Zealand, New Caledonia and Australia concluded that Zealandia, a roughly 4.9 million square kilometre mass of continental crust of which about 94 percent lies underwater, meets every geological criterion for a continent, a case geologist Nick Mortimer argued would have been settled long ago if the crust were not submerged. The idea was first proposed by Bruce Luyendyk in 1995. It has been described variously as a submerged continent, a continental fragment and a microcontinent, and has not been adopted as a standard eighth continent in the conventional lists this atlas otherwise follows.
What Would Settle It A shift in the standard continent count that the world's atlases, geography curricula and geological bodies converge on adopting; the underlying geology is not seriously disputed, only whether the classification "continent" is extended to a landmass this submerged.
Question posed in
Zealandia (Wikipedia), Continent classification section.