The Slow Ages

Journey through six centuries of the Khmer Empire — the great Southeast Asian civilization that built Angkor Wat and transformed the floodplains of Cambodia into an empire of water, rice, and stone. From Jayavarman II's consecration on the mountain in 802 CE to the slow turning of the fifteenth century, this is a quiet, slow-paced telling of kings and engineers, of the Churning of the Ocean of Milk carved in sandstone, of roads, hospitals, and smiling stone faces — and of a city that never really died.
Our storyteller lingers along the way: the morning market described by the Chinese visitor Zhou Daguan in 1296, the five towers of Angkor Wat at dusk, the slow transformation when the empire moved downstream and the temples kept watch. Narrated in the Slow Ages style — a deep, unhurried voice for the edge of sleep. About 61 minutes.
Sources (a selection): Coedès, The Indianized States of Southeast Asia; Jacques, "On Jayavarman II, the Founder of the Khmer Empire"; Evans et al., PNAS (2007, 2013); Klassen et al., Science Advances (2021); Buckley et al., PNAS (2010); Penny et al., PNAS (2019); Polkinghorne et al., The Angkorian World (Routledge, 2023); Zhou Daguan, A Record of Cambodia, trans. Harris (2007); Higham, The Civilization of Angkor; Freeman & Jacques, Ancient Angkor; Briggs, "Siamese Attacks on Angkor Before 1430"; Chandler, A History of Cambodia.

Teotihuacan — the great planned city of the Valley of Mexico — was at its height the largest city in the ancient Americas, contemporary with imperial Rome, holding perhaps a hundred thousand people in some two thousand walled apartment compounds. We cannot name a single ruler of this city. They left no royal tombs, no dynastic inscriptions, no readable texts — only streets, pyramids, murals, and bones, and for two centuries archaeologists have read them like a book. This episode walks the whole arc: the grid-plan of the city and the river they moved to lay the Avenue of the Dead; the Pyramid of the Sun built over a made cave and the Pyramid of the Moon at the avenue's end, with its sacrificial offerings of dozens of people and golden eagles; the Feathered Serpent temple in the Ciudadela, where nearly two hundred warriors were laid with their trophy-jaws, and the sealed tunnel with its river of mercury; the immigrant neighbourhoods — Oaxacan, Maya, Gulf Coast — who lived as Teotihuacanos; the green glass trade that ran to the Maya lowlands; and January 16, 378, the day "Fire Is Born" arrived at Tikal and a king died the same day — a date we know only because the Maya wrote it down. Then: the Great Fire of the sixth century, the fire that burned the city's public face and mostly spared its homes, and the long argument over why — drought, the neighbours' revolt, the year without summer. And at last, four centuries of afterlife: the Mexica pilgrimages, the relics buried beneath the Templo Mayor, the name they gave — the place where the gods were made. A slow, unhurried reading, for the edge of sleep. About sixty-three minutes. Sources (a selection): George Cowgill, Ancient Teotihuacan (Cambridge UP, 2015); René Millon et al., Urbanization at Teotihuacan: The Teotihuacan Map (UT Press, 1973); Michael E. Smith et al., "Apartment Compounds, Households, and Population" (Ancient Mesoamerica, 2019); Linda Manzanilla, "Cooperation and Tensions in Multiethnic Corporate Societies" (PNAS, 2015); Saburo Sugiyama, Human Sacrifice, Militarism, and Rulership (Cambridge UP, 2005); David Stuart, Spearthrower Owl: A Teotihuacan Ruler in Maya History (Dumbarton Oaks/Harvard, 2025); Matthew Lachniet et al., "A 2,400-Year Mesoamerican Rainfall Reconstruction" (Geology, 2012); Leonardo López Luján & Monica De Anda Rogel, "Teotihuacan in Mexico-Tenochtitlan" (PARI Journal, 2019); UNESCO World Heritage listing, no. 414.

A long bedtime episode for The Slow Ages on the Maya — the people who built a civilisation around counting time, and who kept that count for four thousand years.
We begin on the shore of a great shallow lake, in the lowlands, just before dawn, some centuries ago. From there the hour moves through the riddle at the centre of Maya history: how a people with no telescopes, and a writing system that would remain unread for four hundred years, watched the sky for centuries and wrote the results down. We meet the scribes — the people of the book and brush — and the burned scribes' quarter at Aguateca; we learn their bar-and-dot numbers, the strange place for nothing, and the honest debate over whether that sign was a zero at all. Then the calendars themselves: the 260-day sacred count, the 365-day vague year, the Calendar Round, and the Long Count that runs back to a creation date of 3114 BC. We look at the Dresden Codex's Venus and eclipse tables, the painted astronomer's back-room at Xultun, and the buildings that (maybe) watched the sunrise — and what modern measurement has quietly un-proven about them. The hour closes with the fire at Maní in 1562, the four books that survived, and a calendar that is still kept today, by day-keepers, about feeding and beginning again — never about apocalypse.
A slow, unhurried reading, for the edge of sleep. About seventy-four minutes.
Sources (a selection):
Aveni, Skywatchers (UT Press, 2001).
Aveni, Gibbs & Hartung, "The Caracol Tower at Chichen Itza," Science 188 (1975): 977–985.
Aveni & Hartung, "Uaxactun, Guatemala, Group E…," World Archaeoastronomy (1989): 441–461.
Bricker & Bricker, Astronomy in the Maya Codices (APS Memoirs 85, 2011).
Saturno, Stuart, Aveni & Rossi, "Ancient Maya Astronomical Tables from Xultun," Science 336 (2012): 463–466.
Šprajc, Inomata & Aveni, "Origin of Mesoamerican Astronomy and Calendar," Science Advances 9 (2023): eabq7675.
Blume, "Maya Concepts of Zero," Proc. Am. Phil. Soc. 155 (2011): 51–88.
Rojo-Garibaldi, Rangoni, González & Cartwright, "…Bijective Numeration, and the Mesoamerican Discovery of Zero," arXiv:2005.10207.
Malmström, Cycles of the Sun, Mysteries of the Moon (UT Press, 1997).
Gronemeyer & MacLeod, "What Could Happen in 2012: Tortuguero Monument 6," Wayeb Notes 34 (2010).
Stuart, The Order of Days (Harmony, 2011).
Restall & Solari, 2012 and the End of the World (Rowman & Littlefield, 2011).
Tozzer (trans.), Landa's Relación de las cosas de Yucatán (Peabody Papers 18, 1941).
Knorozov, "Drevnyaya pismennost' Tsentral'noy Ameriki," Sovetskaya Etnografiya 3 (1952).

Rome: how one river town became the world. A slow, unhurried reading of the longest climb in history — from the mud huts of the Palatine and the twins and the wolf, through the kings and the Etruscan shadow, to the day the city chose a government without a king. Two consuls who could not outlast each other, a hundred senators who could not be bought, a tribune who said the word that still means 'no', and the first written law, posted in the forum where anyone could read it. Then the long walk: the league of Italy, the war across the water, the elephants at the Alps, the crescent at Cannae, the gift of Greece, the roads that still carry the trucks of Europe, the eleven aqueducts and the half-million-cubic-metre day, the concrete that got stronger in the sea, the city of a million people who could drink, bathe and vote. And at the end, the quietest and the longest legacy of all: the law, in the codes of the nations and the words we still use, and the peace that was bought with the provinces' grain and the provinces' sons — and the fall that did not erase the building.
A slow, unhurried reading, for the edge of sleep. About 2 hours and 29 minutes.
Sources (a selection): Livy, Ab Urbe Condita; Plutarch, Lives (Romulus; Pyrrhus; Cato; Antonius); Polybius, Histories; Caesar, Commentarii de Bello Gallico; Suetonius, Lives of the Twelve Caesars; Cassius Dio, Roman History; Frontinus, De Aquaeductu; Pliny the Elder, Naturalis Historia; Justinian, Corpus Iuris Civilis (Digest, Codex, Institutes). T. J. Cornell, The Beginnings of Rome (Routledge, 1995); N. Terrenato, The Archaeology of Early Rome (2019); Posth et al., "The origin and legacy of the Etruscans," Science Advances 7 (2021); A. T. Hodge, Roman Aqueducts and Water Supply (1992); C. Bruun, The Water Supply of Ancient Rome (2013); A. Wilson, Building Rome (2008); DeRosa, Grattan-Ballantine et al., "Seawater-hardening of Roman marine concrete," American Mineralogist (2018); F. Millar, The Emperor in the Roman World (1977); A. Goldsworthy, The Complete Roman Army (2003); W. S. Hanson, Roman cities gazetteer (2016); Grafton & Swerdlow, "Technical Chronology and Astrological History in Varro," Classical Quarterly (1985); ERC, "The Roman Empire of 2000 Cities" (city-count project).

The Celts and the Gauls: widespread tribal societies across Western Europe, known for their fine metalwork and a restless, curving art, who left almost nothing written. A slow, unhurried reading of their world — the salt mines of the east, the princely graves, the iron swords set into the lakes, the spiral ornament, the walled towns, the learned men, the gods half-named, the long movement into Italy and Greece and the far east — and then the war with Rome, from the Helvetian migration to Alesia, told with the care we owe a story that survives only in the account of the man who won it.
For the edge of sleep. About 85 minutes.
Sources (a selection): Julius Caesar, Commentarii de Bello Gallico; Diodorus Siculus, Bibliotheca Historica 5.26–32; Pliny the Elder, Naturalis Historia 16.93–95 (oak and mistletoe); Pausanias, Description of Greece 10.19–23 (Delphi); Herodotus, Histories 4.46–49; Livy, Ab Urbe Condita 5.33–51; Cassius Dio, Roman History 39–40. Barry Cunliffe, The Ancient Celts (Oxford, 1997; 2nd ed. 2018); Bernhard Maier, The Celts (Edinburgh, 2017); Miranda Green (ed.), The Celtic World (Routledge, 1995); John Collis, The Celts: Origins, Myths and Inventions; Christopher Pare, “Fürstensitze, Celts and the Mediterranean World” (1991); John R. Collis, “‘Celtic’ Oppida”; Ian Stewart, The Celts: A Modern History (Princeton, 2016); Adrian Goldsworthy, Caesar: Life of a Colossus (Yale, 2006); H. H. Scullard, From the Gracchi to Nero (Routledge, 1982); T. J. Cornell, The Beginnings of Rome (Routledge, 1995). National Museum of Denmark (the Gundestrup cauldron); British Museum (La Tène torcs).

West of Rome, on the low hills of the Tiber plain, a city of white tufa waits in the dusk. It has no name you can yet say — and it will take a long time to understand what you are standing in. This is the story of the Etruscans, the people who grew out of that plain, built the Rome you know, and then slowly, without a fire, went away.
We take it slowly. First the old question — where did they come from? — the Greek legends of Tyrrhenos and the great drought, and what the archaeology, the inscriptions, and the ancient DNA now say. Then the quiet birth of the culture: the cremations of the Villanovan villages, the ships that brought the east, and the black burnished pottery that made the plain's own. The land and its cities — the twelve-city league and the sanctuary no one has ever found, the language that belongs to no family we know, the gold tablets from Pyrgi that anchor the names but do not open the door. The aristocratic families, and the women who reclined at the table beside the men. The painted tombs of Tarquinia, and the cheerful dead. The religion of the divided sky and the bronze liver. The sea, the coin, and the treasury at Delphi that no other Etruscan city was allowed to build. The battles at Alalia and at Cumae. The long siege and the fall of Veii, the city whose sculptor made the statues of the gods of Rome. And at last the city on the Tiber, which took their kings, their gods, their alphabet, and their way of asking the sky — and called them its own.
A slow, unhurried reading, for the edge of sleep. About sixty-five minutes.
Sources (a selection): Herodotus, The Histories (1.94, the two origin accounts; 1.165–167, the battle of the Sardinian Sea and the plague of Caere); Posth, C. et al., "The origin and legacy of the Etruscans through a 2000-year archeogenomic time transect," Science Advances 7(39) (2021); Beekes, R. S. P., "The Origin of the Etruscans," Bijdragen tot de Taal-, Land- en Volkenkunde 175(3) (2019); Rix, H., "The Etruscan Language," in The Etruscans, 2nd ed. (U. Chicago Press, 2008); Barker, G., The Etruscans (Edinburgh UP); Shipley, L., The Etruscans (Reaktion, 2017); De Grummond, N. T., Etruscan Myth, Sacred History and Legend (Penn Museum, 2006); Pallottino, M., The Etruscans (Penguin, 1975); Livy, Ab Urbe Condita (1.34–59, the Etruscan kings and Lucretia; 5.19–22, the fall of Veii); Dionysius of Halicarnassus, Roman Antiquities; Claudius, Oratio (Lugdunum tablet); Cornell, Tim, The Beginnings of Rome (1995); Forsythe, Gary K., A Critical History of Early Rome (Columbia UP, 2005); Pindar, Pythian 1; and the Soprintendenza Viterbo/Etruria Meridionale on the "Franco Adamo" tomb (2025).