Browse
All Facts
11,491 facts. Click any fact to see its full page.
All 11,491
π History 1,991
π¬ Science 1,964
πΎ Animals 1,525
π Space 977
π§ Psychology 893
πΏ Nature 759
π» Technology 735
π Geography 599
π Culture 581
π« Human Body 572
π Ocean 373
π¬ Language 245
π Food 199
β¨ General 68
β¨ Dinosaur 10
The ancient Roman city of Timgad in Algeria was built in 100 AD and laid out in a perfect grid β still visible from the air.
Pompeii's fast-food counters (thermopolium) offered at least 80 different food items, according to analysis of residues.
The Colosseum was built in just 8β10 years using 100,000 cubic meters of travertine stone.
Ancient Egyptians had over 40 types of bread and beer β they were dietary staples across all social classes.
The prehistoric site of Skara Brae in Scotland, occupied 5,000 years ago, contains furniture, storage boxes, and hearths carved from stone.
The Roman aqueduct system delivered up to 1 million cubic meters of fresh water to Rome daily.
The ancient Egyptians had a concept of zero as a word meaning 'nothing' in accounting contexts.
The Hanging Gardens of Babylon may never have existed β no Babylonian texts mention them, and no archaeological evidence has been found.
The ancient city of Persepolis, ceremonial capital of the Persian Empire, was burned by Alexander the Great in 330 BC.
The stone spheres of Costa Rica, created by the DiquΓs culture around 600 AD, were carved to near-perfect roundness.
Ancient Rome at its peak had public libraries, free grain distribution, and thermopolia (fast food shops) on every corner.
Pre-Columbian peoples in the Amazon built extensive earthworks and managed the forest, creating fertile 'terra preta' soil.
The colossus of Rhodes, one of the Seven Wonders, stood for only 56 years before an earthquake toppled it.
The ancient city of Carthage was so thoroughly destroyed by Rome that for centuries no one was sure where it had stood.
GΓΆbekli Tepe was deliberately buried by its builders around 8000 BC β suggesting intentional preservation.
The Voynich Manuscript, an illustrated early 15th-century codex, has never been decoded β its language remains unknown.
Zimbabwe's Great Enclosure was built without mortar using dry-stone masonry between 1100β1450 AD.
The city of Teotihuacan in Mexico was one of the largest cities in the world at its peak β yet its builders remain unidentified.
The mysterious Sea Peoples who attacked Mediterranean civilizations around 1200 BC remain unidentified β they may have contributed to the Bronze Age Collapse.
The Terracotta Army buried with China's first emperor Qin Shi Huang numbered over 8,000 soldiers, 130 chariots, and 520 horses.
The Olmec civilization of Mexico, dating to 1500 BC, created the earliest known writing in the Americas.
The ancient Egyptians practiced brain surgery β trepanation holes in skulls show signs of healing, suggesting survival.
The Temple of Artemis at Ephesus was four times the size of the Parthenon β destroyed and rebuilt three times.
The ancient city of Ur in Mesopotamia had suburbs, schools, and taverns 4,000 years ago.
The Lydians of modern-day Turkey are credited with inventing coinage around 600 BC.
The Maya writing system, a combination of logograms and syllables, was fully deciphered only in the 20th century.
Troy was discovered by Heinrich Schliemann in 1868 by taking the Iliad as a literal geographical guide.
The Great Pyramid of Giza was built using about 2.3 million stone blocks weighing 2.5β15 tons each.
The Mohenjo-daro civilization had standardized brick sizes and weights across vast distances β suggesting centralized authority.
Derinkuyu in Turkey is an ancient underground city that could shelter up to 20,000 people along with livestock.
The Antikythera mechanism, found in a Greek shipwreck, is a 2,000-year-old analog computer that predicted astronomical events.
The lost city of Pompeii preserved a snapshot of Roman life in extraordinary detail β including fast food restaurants and political graffiti.
The ancient city of Angkor in Cambodia was the largest preindustrial city in the world, covering 1,000 square kilometers.
GΓΆbekli Tepe in Turkey, dated to 9600 BC, is the world's oldest known monumental structure β predating agriculture.
The ancient Minoan civilization of Crete collapsed suddenly around 1450 BC β possibly due to volcanic eruption on nearby Thera.
Stonehenge was built in multiple phases over 1,500 years, beginning around 3000 BC.
Easter Island's moai statues were 'walked' into position by rocking them upright on stone sleds, according to current research.
The Library of Alexandria may have held copies of every book in the ancient world β its destruction was a catastrophic loss.
The Indus Valley Civilization had advanced urban planning with grid-patterned streets and sophisticated sewage systems 4,500 years ago.
The city of ΓatalhΓΆyΓΌk in modern Turkey, dating to 7500 BC, had no streets β residents entered homes through roof holes.
The Nazca Lines in Peru, enormous geoglyphs visible only from the air, were created by the Nazca culture between 200 BC and 600 AD.
Game theory is both a branch of mathematics and applied philosophy β it analyzes strategic interaction.
Epistemic humility β acknowledging the limits of one's knowledge β is considered a core intellectual virtue.
Philosophy of time asks whether time flows, whether the past and future exist, and whether time travel is logically possible.
Dualism, associated with Descartes, holds that mind and body are fundamentally different substances.
Materialism holds that only physical matter exists β all mental phenomena are physical processes.
The examined life, advocated by Socrates, suggests that self-knowledge is the foundation of wisdom.
Decision theory uses mathematics to analyze choices under uncertainty β it intersects economics, philosophy, and statistics.
Nietzsche's concept of the Γbermensch (Superman) was misappropriated by the Nazis β his actual philosophy criticized nationalism and anti-Semitism.
The philosophy of language explores how words and sentences acquire meaning.