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France's Failed Attempt to Turn the Sahara Desert into a Fertile Sea
Jules Verne used the failed project as inspiration for his last adventure novel
In 1870s France, Ferdinand de Lesseps was a rock star. This was the man who had dared to dream the Suez Canal into being. Finished in 1869, the canal not only shaved off 6,000 km (nearly 4,000 miles) off the sea voyage from Europe to Asia, it also turned Africa into an island. De Lesseps was a world-changer. French public opinion hailed him as le grand Français; the imperial government made him a viscount.
Casting about for the next world-changing scheme, de Lesseps fell upon a plan to create a giant inland sea in the North African desert. The idea was not his own , but it took the Great Frenchman's seal of approval to propel the plan from obscurity to nationwide prominence.
The father of the 'Sahara Sea' was François Élie Roudaire, a French army captain who had been tasked in 1864 with mapping the more inaccessible parts of Algeria, then a French colony . In 1874, the military geographer was the first to establish that the so-called Chott  el-Mehrir, in the south of Constantine province and close to the border with Tunisia, was situated well below sea level .
Knowing his classics, Roudaire couldn't help thinking that this submarine salt plain might once have been the seabed of the fabled Bay of Triton . Described by Herodotus but unknown to modernity, the lake's debatable existence and location constituted an Atlantis-type mystery popular among geographers. Could Chott el-Mehrir be contiguous with other chotts towards the Tunisian coast, forming a the ghostly imprint of a former sea inlet? And… could this semi-mythical body of water be resurrected?
Detailed overview of the chotts across the Algerian-Tunisian border. They are coloured in too optimistic a shade of blue.
In the immediate aftermath of de Lesseps' triumph at Suez, a project of that magnitude might not have seemed impossible. But that still leaves the question: Why recreate that ancient sea at all?
Two words: mission civilatrice , the French take on the White Man's Burden. On the eve of Europe's Scramble for Africa, France's grip on a large swathe of the continent - from the Maghreb to the West African coast - was already tightening. With it came plans to bring order and progress to the continent, perhaps in the form of a Trans-Sahara Railroad ; and why not by re-creating an inland sea that would bring commerce and agriculture to the otherwise useless desert…
Roudaire laid out his plan in the May 15, 1874 issue of the Revue des Deux Mondes. To reanimate the Bay of Triton as far inland as 380 km (235 miles) from the Gulf of Gabès, on the Tunisian coast, he proposed to breach the coastal 'isthmus' of 20 km (13 miles) wide and 45 m (150 feet) high and siphon Mediterranean water inland via a canal that would be 190 km (120 miles) long. The resulting sea would have an average depth of 23 m (78 ft) and a surface area of about 5,000 km2 (3,100 sq. mi), which is roughly double the size of Utah's Great Salt Lake, or 14 times the size of Lake Geneva.
The admirable Triton: a map indicating the presumed location and extent of the ancient body of water.
The price tag: a mere 25 million francs . A small investment with a large return. The reanimated bay would, so Roudaire thought, be big enough to alter the local climate, turning the surrounding desert into a breadbasket: a vindication of France's enlightened policies, with tangible benefits for the local population. "The Sahara is the cancer eating away at Africa", Roudaire wrote. "We can't cure it; therefore, we must drown it".
Perhaps Roudaire found it fitting that the Sahara Sea would not only bring progress and prosperity, but also fulfil an ancient prediction. Legend has it that the god Triton himself, seated on a brazen tripod, had foreseen that, when a descendant of the Argonauts would come and carry off that tripod from his temple, a hundred Grecian cities would be built around the lake. And wasn't 19th-century Imperial France a worthy transmitter of the values and virtues of Antiquity? Creating what Roudaire called une mer intérieure africaine - a miniature Mare Nostrum  - would confirm France as a clear successor to the Roman Empire.
And yet, however high-minded the plan, Roudaire's large inland sea would also serve a more cynical, military purpose: "Un canal, large et profond, isolerait le sud tunisien […] et aiderait la pacification de la region". The Sahara Sea would isolate the rebellious tribes of southern Tunisia, making it easier to contain and subdue them.
Maximalist plan, with both the canal, and all to be submerged areas shown. Note the comparison map of Lake Geneva, inset lower right hand corner.
Roudaire didn't just appeal to public opinion; he also made sure to address the Great Frenchman directly. In a letter to de Lesseps, he explained that creating the Sahara Sea would result in:
"an immense amelioration of the climate of Algeria and Tunis, since the moisture caused by the evaporation  from the vast expanse of water will be driven by the prevailing southerly winds over these countries, forming a layer of humid atmosphere which will greatly mitigate the intensity of the solar rays and retard the cooling of the earth by radiation during the night. The proposed sea, too, being navigable for ships of the greatest draught, will also open a new commercial route for the districts lying to the south of the Aurès  and the Atlas range; while watercourses which from the south, west, and north converge towards the shotts, but which are now dry during the greater part of the year, will again become rivers, as the once undoubtedly were, leading ultimately to the fertilisation of vast tracts of now desert land on their banks".
De Lesseps bought into Roudaire's vision. With Suez Canal Man on board, France's political, scientific and literary elites followed suit. The Académie des Sciences supported the idea, and the French government provided Roudaire with a budget of 35,000 francs for a trigonometrical survey of the chotts towards the Tunisian coast.
In blue, the areas that are actually below sea level.
These expeditions must have been the high water mark of Roudaire's life. He was promoted, to chief of squadron. Great things were expected of him - to be the next French world-changer. And he traveled in style, accompanied by two engineers, a doctor, a purser, a draughtsman and twelve chasseurs d'Afrique .
Roudaire undertook two expeditions, to the Chott el-Gharsa in 1876 and to the Chott el-Djerid in 1878. The results were mixed, at best: Roudaire was able to establish, at least to the satisfaction of de Lesseps, that the chotts indeed were an ancient seabed. But the Tunisian chotts turned out to be truncated by elevated thresholds. The Chott el-Djerid, which is closest to the sea, was actually situated significantly above sealevel.
Only slightly daunted, Roudaire tried to save his scheme by lengthening his proposed canal while also decreasing the area to be flooded. But it was no use. France's scientists and engineers turned against the scheme — the former citing bad geography and geology, the latter an estimated cost ballooning to over a billion francs. In 1882, a high commission advised the French government against proceeding with the plan.
But Roudaire and de Lesseps couldn't help believing in the Sahara Sea. With private money, they founded a Société d'études de la mer intérieure africaine. Under its auspices if no longer the French government's, Roudaire in early 1883 left Touzeur for a fourth expedition . Even at that palliative stage of the plan, the Boston weekly Littell's Living Age, still proclaimed: "This is the plan which M. de Lesseps has been engaged in investigating, which Commandant Roudaire has been advocating for some ten years, and which may be said to have a calculable, if not a very immediate, chance of being carried out."
When Roudaire returned to France, he faced illness and criticism. Both the scientific milieu and his military hierarchy condemned his dogged adherence to what seemed to everyone else a lost cause. The forlorn pioneer of the Sahara Sea died in 1885 at the age of 48, of a fever he brought home from his last expedition.
Roudaine was survived by his African Inland Sea Research Society, which restricted itself to exploring the feasibility of an agricultural colony near Gabès, sinking artesian wells into the sand to fertilise the desert. Lack of results led to the society's dissolution in 1892.
As visionary as it was impracticable, the idea for a Sahara Sea tickled the fancy of Jules Verne, the grandfather of science fiction. In Hector Servadac (1877; a.k.a. Off on a Comet) he refers to Roudaire's scheme as if it is actually taking shape. In his last adventure novel, L'Invasion de la mer (1905; a.k.a. The Invasion of the Sea), he revisits the plan, with Berbers and Europeans fighting over the plan, only to have an earthquake create it anyway.
Verne revisited the idea of a Sahara Sea in his last book.
But grand visions never die, they just wait for the next visionary. In 1919, the Roudaire plan was cited as the inspiration for schemes to insert canals deep into the Tunisian interior. As late as 1958, French scientists were proposing versions of the plan. Even today, some suggest Roudaire's vision could still be realised. No canal required: by pumping water into the Chott El-Djerid, a submarine area west of Gabès of about 8,000 km2. The justification is the same as Roudaire's: creating an evaporation surface of such size would increase rain in the area, enhancing agricultural opportunities.
But perhaps ancient curses outweigh modern ideas of progress (or simply outlive them). The same legend mentioned above has it that the locals, when hearing Triton's prediction of a hundred Greek towns crowding around their lake, grabbed a hold of his magic tripod, and hid it in a place safe from the descendants of the Argonauts.
The Sahara Sea not only claimed the life of François Élie Roudaire, it also seems to have tainted the further career of Ferdinand de Lesseps. His later attempt to dig the Panama Canal  ended in a gigantic failure and a bribery scandal - for which he received a prison sentence in 1893. It was only commuted because of his advanced age. He died a year later.
The Sahara Sea remains what it was when Roudaire first conceived it: a desert mirage, shimmering in the untouchable distance. Unless and until someone finds Triton's tripod...
Strange Maps #617
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 Nor was the Suez Canal an original idea by de Lesseps. In 1832, while in quarantine on board a French mailboat off Alexandria, he came across a feasibility study into the subject, produced by Jacques-Marie Le Père, the director of Bridges and Roads on Napoleon's Egyptian campaign (1798-1801). Le Père's Mémoire sur la communication de la mer des Indes à la Méditerranée par la mer Rouge et l’isthme de Soueys had been published in Paris in 1822. ↩
 Whether Algeria was a 'colony' or simply a part of France depends on how charitable a view you hold of France's dominion over the country. Th French conquered Algeria in 1830 and annexed it in 1848, at which time its coastal zone was divided into three departments. These were considered a part of France just as much as any other 'metropolitan' department, although the native Algerians were granted considerably less rights than other French citizens - about 1 million of which had colonised the coastal districts by the middle of the 20th century. ↩
 'Chott' is the French spelling for an Arab word meaning 'bank' or 'coast', and is pronounced shot. The word describes salt lakes in the northern Sahara across Morocco, Algeria and Tunisia that receive some water in wintertime, but are dry most of the year. ↩
 At -40 metres (-130 ft), the area holds the distinction of being Algeria's lowest point. ↩
 Triton is not a place but a person, or rather a god. The son of Poseidon, Triton is a merman (upper body of a man, the tail of a fish) who in the story of the Argonauts dwells on the coast of Libya, where the Argo is cast into Tritonis palus, a marshy lake out of which the god himself has to guide Jason and his crew. ↩
 Literally, 'civilising mission'. The idea was not just to govern colonised people, but to assimilate them into European culture by having them adopt the French language, French culture and dress, and the Christian religion. ↩
 The French idea to link Algiers and Abidjan by rail rivalled the British scheme for a Cape-to-Cairo railway; neither proposal would come to fruition. ↩
 Small change compared to the 430 million francs it cost to dig the Suez Canal. ↩
 'Our Sea' in Latin, a term used by the Romans, first for the eastern Mediterranean, then for the entire sea, as their empire expanded its control over its shores in the first century BC. The term was resurrected by Italian nationalists in the late 19th and by Italian fascists in the early 20th century. For more on Italy's colonial ambitions under Mussolini, see #325. ↩
 Elsewhere, Roudaire cleverly draws analogy to de Lesseps' achievement by comparing his inland sea (and its projected rate of evaporation) to the Bitter Lakes, bodies of water that were created specifically for the Suez Canal. Although much smaller, they are positioned at a similar latitude (near the 34th parallel north). ↩
 An eastern extension of the Saharan Atlas range, situated in northeastern Algeria. Because of its inaccessibility, it remains relatively underdeveloped and retains its Berber character. The Aurès range was where Berbers in 1954 started the rebellion that would morph into the Algerian War of Independence. left Algeria in 1962. ↩
 Light infantry corps recruited mainly from the European settlers in North Africa (the so-called 'pieds-noirs'), as opposed to the Spahis, which were raised from the native North African population. The Chasseurs d'Af distinguished themselves in the Crimean War, 's invasion of Mexico, and both World Wars, among other conflicts. They corps were disbanded after Algerian independence, but a (mechanised) successor regiment was reinstated in 1998. ↩
 In that year, de Lesseps visited the chotts himself, reporting that the canal in his estimate would cost five years' work and cost 150 million francs. ↩
A Mercury-bound spacecraft's noisy flyby of our home planet.
- There is no sound in space, but if there was, this is what it might sound like passing by Earth.
- A spacecraft bound for Mercury recorded data while swinging around our planet, and that data was converted into sound.
- Yes, in space no one can hear you scream, but this is still some chill stuff.
First off, let's be clear what we mean by "hear" here. (Here, here!)
Sound, as we know it, requires air. What our ears capture is actually oscillating waves of fluctuating air pressure. Cilia, fibers in our ears, respond to these fluctuations by firing off corresponding clusters of tones at different pitches to our brains. This is what we perceive as sound.
All of which is to say, sound requires air, and space is notoriously void of that. So, in terms of human-perceivable sound, it's silent out there. Nonetheless, there can be cyclical events in space — such as oscillating values in streams of captured data — that can be mapped to pitches, and thus made audible.
Image source: European Space Agency
The European Space Agency's BepiColombo spacecraft took off from Kourou, French Guyana on October 20, 2019, on its way to Mercury. To reduce its speed for the proper trajectory to Mercury, BepiColombo executed a "gravity-assist flyby," slinging itself around the Earth before leaving home. Over the course of its 34-minute flyby, its two data recorders captured five data sets that Italy's National Institute for Astrophysics (INAF) enhanced and converted into sound waves.
Into and out of Earth's shadow
In April, BepiColombo began its closest approach to Earth, ranging from 256,393 kilometers (159,315 miles) to 129,488 kilometers (80,460 miles) away. The audio above starts as BepiColombo begins to sneak into the Earth's shadow facing away from the sun.
The data was captured by BepiColombo's Italian Spring Accelerometer (ISA) instrument. Says Carmelo Magnafico of the ISA team, "When the spacecraft enters the shadow and the force of the Sun disappears, we can hear a slight vibration. The solar panels, previously flexed by the Sun, then find a new balance. Upon exiting the shadow, we can hear the effect again."
In addition to making for some cool sounds, the phenomenon allowed the ISA team to confirm just how sensitive their instrument is. "This is an extraordinary situation," says Carmelo. "Since we started the cruise, we have only been in direct sunshine, so we did not have the possibility to check effectively whether our instrument is measuring the variations of the force of the sunlight."
When the craft arrives at Mercury, the ISA will be tasked with studying the planets gravity.
The second clip is derived from data captured by BepiColombo's MPO-MAG magnetometer, AKA MERMAG, as the craft traveled through Earth's magnetosphere, the area surrounding the planet that's determined by the its magnetic field.
BepiColombo eventually entered the hellish mangentosheath, the region battered by cosmic plasma from the sun before the craft passed into the relatively peaceful magentopause that marks the transition between the magnetosphere and Earth's own magnetic field.
MERMAG will map Mercury's magnetosphere, as well as the magnetic state of the planet's interior. As a secondary objective, it will assess the interaction of the solar wind, Mercury's magnetic field, and the planet, analyzing the dynamics of the magnetosphere and its interaction with Mercury.
Recording session over, BepiColombo is now slipping through space silently with its arrival at Mercury planned for 2025.
Research suggests that aging affects a brain circuit critical for learning and decision-making.
As people age, they often lose their motivation to learn new things or engage in everyday activities. In a study of mice, MIT neuroscientists have now identified a brain circuit that is critical for maintaining this kind of motivation.
Why not just divide the United States in slices of equal population?
- Slicing up the country in 10 strips of equal population produces two bizarre maps.
- Seattle is the biggest city in the emptiest longitudinal band, San Antonio rules the largest north-south slice.
- Curiously, six cities are the 'capitals' of both their horizontal and vertical deciles.
Sweeping re-alignments<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDYwMTAwOC9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTYyMzU3ODA1NH0.u_5xakBvkYwgPtiwLU3z-1e082hBeqwS4Rl1uiJqdF4/img.png?width=980" id="23ff1" class="rm-shortcode" data-rm-shortcode-id="24a5b6ec251a11f3ed7aaefc205dde17" data-rm-shortcode-name="rebelmouse-image" alt="Printed in March 1812, this political cartoon was drawn in reaction to the newly drawn state senate election district of South Essex created by the Massachusetts legislature to favor the Democratic-Republican Party candidates of Governor Elbridge Gerry over the Federalists. The caricature satirizes the bizarre shape of a district in Essex County, Massachusetts, as a dragon-like "monster". Federalist newspaper editors and others at the time likened the district shape to a salamander, and the word gerrymander was a portmanteau of that word and Governor Gerry's last name." />
The original cartoon of the 'Gerry-Mander', published in 1812 in the Boston Centinel.
Image: Elkanah Tisdale (1771-1835), Public Domain.<p>One way for a political party to manipulate the outcome of elections is to 'gerrymander' electoral districts: manipulate their boundaries to increase the likelihood of a favorable outcome (see also #<a href="https://bigthink.com/strange-maps/53-ever-been-ger..." target="_blank">53</a>).</p><p><span></span>The term is almost as old as the United States itself, and the practice continues to disfigure the electoral map to this day. Perhaps these maps can serve as the inspiration for a radical solution. </p><p><span></span>They show the contiguous United States (i.e. without Alaska and Hawaii) sliced latitudinally and longitudinally into ten straight-bordered bands of varying size, so that each contains exactly 10 percent of the population. </p><p><span></span>Although certainly not intended as a reflection on electoral redistricting, it's tempting to see these sweeping re-alignments of the U.S. as a suggestion with some potential in that direction. </p>
United Strips of America<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDYwMTA4MS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0NzE1MjQ1MX0.WpISo-g15B5O3qXbHXHf-7lQtAainpO7zPuizXWFOGs/img.jpg?width=980" id="d6656" class="rm-shortcode" data-rm-shortcode-id="72ed7c905283f9979ec0f82d451ad261" data-rm-shortcode-name="rebelmouse-image" alt="Reddit user curiouskip used U.S. Census population data to divide the 'Lower 48' into deciles (ten equal parts), each representing about 30.8 million people. Each decile is consigned its most populous city as 'capital'." />
The contiguous United States, divided into horizontal and vertical deciles.
Image: u/curiouskip, reproduced with kind permission.<p>Reddit user curiouskip used U.S. Census population data to divide the 'Lower 48' into deciles (ten equal parts), each representing about 30.8 million people. Each decile is consigned its most populous city as 'capital'.</p><p><span></span>Looking at the top map, which divides the U.S. into 10 longitudinal strips, we see</p><ul><li>Seattle rules the northernmost slice of territory. It is the broadest, and therefore also the emptiest one.</li><li>The Chicago, Omaha, New York City and Indianapolis strips complete the northern half of the country. And indeed: 50 percent of the population occupies roughly one half of the country, from north to south.</li><li>The dividing line between the top and bottom halves of the country runs from just north of the San Francisco Bay to halfway across the Delmarva Peninsula.</li><li>Capital cities of the southern strips are San Jose, Charlotte, Los Angeles, San Diego, and Houston.</li><li>The Houston Strip is divided into two non-contiguous areas. Florida maintains its panhandle, albeit much reduced. </li></ul><p>The bottom map shows the U.S. divided latitudinally into 10 bands of equal population. </p><ul><li>San Jose and Los Angeles both retain their capital status, this time of the two westernmost strips.</li><li>San Antonio is the main city of the Big Empty, more than twice as wide as the second-broadest band.</li><li>The dividing line between America's eastern and western half, population-wise, is far off-center: it skirts the eastern edge of Chicago, making the western half much bigger than the eastern one.</li><li>Houston, Chicago, and Indianapolis also remain the largest cities in their respective bands.</li><li>Further east, Jacksonville and Philadelphia get to rule over their strip of America, while Charlotte and New York City keep winning, both vertically and horizontally.</li></ul><p>Redistricting a country into zones of equal population – and that being your only criterium – will create districts that are randomly diverse, and perhaps also, at least in this case, unmanageably large. </p><p>However, mixing up the political map with a bunch of straight lines as the only instrument is something that has been considered before. Usually, the objective is the wholesale removal of age-old divisions. <br></p>
Perfectly square departments<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDYwMTEzOS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYwOTQyMzIwOH0.kYuf58g0bjsPL9DGPq5PycZ7PDJMnItT0rfrPonOP3k/img.jpg?width=980" id="89a68" class="rm-shortcode" data-rm-shortcode-id="5b81a43e785997bb1f11f72548659a9f" data-rm-shortcode-name="rebelmouse-image" alt="\u200bCh\u00e2ssis figuratif du territoire de la France partag\u00e9 en divisions \u00e9gales entre elles, proposition annex\u00e9e au rapport du 29 septembre 1789 \u00e0 l'Assembl\u00e9e nationale de la commission dite Siey\u00e8s-Thouret" />
France divided into 80-odd geometrical departments: failed proposal by Jacques-Guillaume Thouret (1790).
Image: Centre historique des Archives nationales – Atelier de photographie; public domain.
European Pie<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDYwMTQ0Ny9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYxNTE5NDE3OX0.dPcY1tkO7nwkx6IX98Sleh7AmBpDnwlcJLfC_Z-WBlY/img.jpg?width=980" id="b35d7" class="rm-shortcode" data-rm-shortcode-id="84509a9425e13c0dd8fbe00df28a197e" data-rm-shortcode-name="rebelmouse-image" />
In this rather outlandish proposal, continental Europe's 24 cantons center on Vienna.
Image: PJ Mode Collection of Persuasive Maps, Cornell University.<p>And in 1920, an anonymous author – possibly the Austrian P.A. Maas – proposed slicing up Post-World-War-I Europe as a pie, into 24 slices that would center on Vienna's St. Stephen's Cathedral. Each of those slices would be made up of a wide and random variety of linguistic, ethnic, and religious groups – and that would be the point: the better to unite them all into one massive superstate (see also #<a href="https://bigthink.com/strange-maps/a-bizarre-peace-proposal-slice-europe-up-like-a-pie" target="_blank">851</a>).</p><p>Needless to say, both plans never left the drawing board. Would a proposal for the longitudinal and/or latitudinal redistricting of the U.S. have more traction? <br></p>
Coast-to-coast precedents<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDYwMTIwOS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY1MDM2OTE0OX0.52UjcA_YD9Y9UB9_hoSctI_xBrRDALZ2DRLkIo9a8RM/img.jpg?width=980" id="10784" class="rm-shortcode" data-rm-shortcode-id="1999808ea21e11162fdb9181c3912753" data-rm-shortcode-name="rebelmouse-image" alt="Illustration of the Connecticut Charter boundary, 1662" />
Putting the 'connect' into Connecticut: the Nutmeg State extending from the Pacific to the Atlantic.
Image: Connecticuthistory.org<p>Well, for one, coast-to-coast polities have some pedigree in America's past: some of the first colonies had claims that extended from the Atlantic all the way to the Pacific. </p><p>If history had gone entirely the way Connecticut would have wanted, the state would include such inland cities as Detroit, Chicago, and Salt Lake City, and extended to what is now the northern part of California.</p><p>Is such geopolitical weirdness reasonable or feasible today? Absolutely not. But in its randomness, would it be it as unfair as gerrymandering? </p><p><em><br></em></p><p><em>Decile maps of the contiguous United States reproduced with kind permission by u/curiouskip; found <a href="https://www.reddit.com/r/dataisbeautiful/comments/ijyn7p/oc_us_population_deciles_by_latitude_and_longitude/" target="_blank">here</a> on <a href="https://www.reddit.com/" target="_blank">Reddit</a>.<br></em></p><p><strong>Strange Maps #1054</strong></p><p><em>Got a strange map? Let me know at </em><a href="mailto:email@example.com">firstname.lastname@example.org</a><em>.</em></p>