Science, technology & invention

Fossils discovered in Chad represent one of the oldest known species on the human lineage after the split from chimpanzees. Features small brain but forward-positioned foramen magnum suggesting possible early bipedalism.

In 2000, Brigitte Senut and Martin Pickford announced Orrorin tugenensis, a hominin from the Tugen Hills of Kenya dated by radiometric, paleomagnetic and biochronological methods to roughly 6 million years ago.

First recovered by Yohannes Haile-Selassie in Ethiopia's Middle Awash region from 1997 and elevated to a distinct species in 2004, Ardipithecus kadabba is known from a jaw fragment, isolated teeth and postcranial elements including a toe…

Fossils of Ardipithecus ramidus were excavated near Aramis in Ethiopia's Middle Awash by a team led by Tim White between 1992 and 1994, but the analysis of the partial skeleton nicknamed 'Ardi' was not published until 2009.

One of the earliest members of the genus Australopithecus. Shows clear adaptations for bipedal walking while retaining some tree-climbing ability.

Best known early hominin species. Famous specimen 'Lucy' (AL 288-1). Clear evidence of habitual bipedalism combined with arboreal capabilities. Brain size approximately 400-500 cc.

Beginning in 1994 with four foot bones and continuing through a painstaking excavation led by Ronald Clarke from 1997, the Sterkfontein Caves of South Africa yielded StW 573 — nicknamed 'Little Foot' — one of the most complete…

In 1978 a team associated with Mary Leakey uncovered, at Laetoli in northern Tanzania, trails of fossil footprints preserved in a layer of volcanic ash that had hardened after a rain shower roughly 3.66 million years ago.

In 2011 researchers working at Lomekwi 3, on the western shore of Lake Turkana in Kenya, recovered deliberately struck stone artefacts that excavation and dating placed at about 3.3 million years old.

The genus Homo appears. LD 350-1 specimen (~2.75 mya) represents one of the earliest members. Oldowan stone tool industry begins – simple choppers and flakes.

From roughly 2.7 to 1.2 million years ago, a distinctive branch of hominins — the 'robust' australopithecines, often placed in the genus Paranthropus — flourished across eastern and southern Africa.

Announced in 1999, Australopithecus garhi was described from a partial skull and other remains recovered at Bouri in the Middle Awash of Ethiopia and dated to about 2.5 million years ago.

In August 2008 nine-year-old Matthew Berger, son of paleoanthropologist Lee Berger, spotted the first bones of a new hominin at the Malapa cave site in South Africa.

Around 1.76 million years ago, toolmakers at Kokiselei 4 west of Lake Turkana in Kenya were shaping large, bifacially flaked teardrop handaxes and cleavers — the hallmark of the Acheulean industry, named after Saint-Acheul in France.

Homo erectus (and African form Homo ergaster) appears. Larger brain (850–1100 cc), more advanced Acheulean handaxes, and first hominin to migrate out of Africa into Eurasia on a large scale.

In 1984, a team led by Richard Leakey and Kamoya Kimeu recovered a near-complete juvenile skeleton, KNM-WT 15000, at Nariokotome near Lake Turkana, Kenya, dated to roughly 1.5–1.6 million years ago.

Around one million years ago, Homo erectus became the first hominin species for which there is widely accepted archaeological evidence of the deliberate use and maintenance of fire.

In 1907 a quarry worker near Mauer, southwest of Heidelberg in Germany, unearthed a robust, chinless human lower jaw that became the type specimen of a new species, Homo heidelbergensis, described by Otto Schoetensack in 1908.

In a 13-metre vertical shaft called the Sima de los Huesos ('Pit of Bones') in the Atapuerca mountains of northern Spain, excavators have recovered nearly 7,000 fossils representing at least 28 individuals, dated to around 430,000 years…

Excavations at an open-cast lignite mine at Schöningen in Lower Saxony, Germany, recovered a set of carefully crafted wooden throwing spears, along with throwing sticks and the butchered remains of dozens of horses, in waterlogged…

In 2013 cavers exploring the Rising Star cave system near Johannesburg, South Africa, squeezed through a narrow chimney into the Dinaledi Chamber and found it littered with hominin bones.

Across the later Middle Palaeolithic, Neanderthals in Europe and western Asia (and early Homo sapiens in North Africa and the Levant) produced a sophisticated stone-tool tradition known as the Mousterian, or Mode III.

Discovered in 1932 at the Florisbad thermal spring in South Africa's Free State, the Florisbad cranium has been directly dated by electron spin resonance on an associated molar to about 259,000 years ago.

The Omo I and Omo II remains, recovered in 1967 from the Kibish Formation along Ethiopia's Omo River, were long regarded as among the earliest fossils of our species.

Excavations led by Curtis Marean at the Pinnacle Point caves near Mossel Bay on South Africa's southern coast document some of the earliest systematic human use of marine resources.

In 1997 a team working in the Middle Awash region of Ethiopia's Afar depression recovered the fossilised crania of two adults and a child, with fragments from several more individuals, near the village of Herto.

In 2019 researchers announced a new human species, Homo luzonensis, based on teeth and hand, foot and limb bones recovered from Callao Cave on Luzon in the northern Philippines.

In 2003 a joint Indonesian-Australian team excavating Liang Bua cave on the island of Flores in Indonesia uncovered a partial skeleton, announced in 2004, of a tiny adult hominin standing about 1.06 metres tall with a brain of only around…

In 2010 a team led by Svante Pääbo at the Max Planck Institute sequenced DNA from a juvenile finger bone excavated in Denisova Cave in the Altai mountains of Siberia and found it belonged to a previously unknown group of archaic humans…

During the later Middle Stone Age, southern African populations developed two distinctive and short-lived stone-tool industries that mark bursts of technological and symbolic innovation. The Still Bay (broadly c.

Microscopic and residue analysis of small stone points from Sibudu Cave in KwaZulu-Natal, South Africa, has provided the earliest widely cited evidence for bow-and-arrow hunting, dated to about 64,000 years ago.

Two notched animal bones from Africa are among the oldest candidates for deliberate numerical notation.

While Levantine foragers were settling down, hunter-gatherers in the Japanese archipelago independently developed one of the world's earliest pottery traditions.

The dog (Canis lupus familiaris) was the first species humans domesticated, well before any plant or livestock and while people were still mobile hunter-gatherers.

Charred crumbs recovered from two hearths at Shubayqa 1, a Natufian site in the Black Desert of northeastern Jordan, provide the earliest direct evidence for breadmaking, dated to around 14,400 years ago.

Between roughly 13,500 and 12,700 years ago, a distinctive tool tradition spread rapidly across much of North America: the Clovis culture, named for finds near Clovis, New Mexico.

At Tell Abu Hureyra on the Euphrates in Syria, archaeobotanical evidence indicates that Epipaleolithic foragers began deliberately cultivating wild cereals — including rye and other large-seeded grasses — around the onset of the Younger…

With the warming Holocene, communities of the Pre-Pottery Neolithic A (PPNA) in the Levant established the first true farming villages, growing cultivated cereals and pulses while still keeping wild-type or barely domesticated crops and…

Independent domestication of wheat, barley, sheep, and goats begins in the Levant and surrounding regions. Transition from mobile hunter-gatherer lifestyle to more sedentary farming and herding communities (Pre-Pottery Neolithic A).

In the semi-arid loess lands of northern China, Neolithic communities domesticated broomcorn millet (Panicum miliaceum) and foxtail millet (Setaria italica), drought-tolerant cereals well suited to the Yellow River region.

Along the lower and middle Yangtze, foragers gradually transformed wild rice (Oryza rufipogon) into domesticated japonica rice (Oryza sativa), creating one of the world's most important staple crops.

In the tropical lowlands of the Central Balsas River Valley of southwestern Mexico, early farmers began selecting the wild grass teosinte (Zea mays ssp. parviglumis) for desirable traits, initiating the domestication of maize (corn).

Some of the oldest surviving woven cloth in the world comes from Neolithic sites in Anatolia and the Levant.

The Neolithic transformation was not confined to the Old World. In Amazonia, ceramics from the Taperinha shell midden near Santarém in Brazil have been dated to roughly 8,000–7,000 years ago, among the oldest pottery yet identified…

In the Wahgi Valley of the New Guinea highlands, the wetland site of Kuk Swamp preserves some of the clearest evidence that agriculture arose independently in the tropics of Sahul.

Fired clay vessels were first made tens of thousands of years earlier by Ice Age foragers in East Asia, but during the Neolithic, pottery became a widespread, everyday technology bound up with settled farming life.

The exploitation of animals for renewable 'secondary products' rather than only meat began with milk.

In central Mesopotamia, on the margins of the rain-fed zone, Samarran communities such as Choga Mami in the Diyala region built some of the earliest known irrigation canals around 6000 BCE.

The harnessing of wind to drive boats was one of prehistory's quieter revolutions, freeing watercraft from the limits of paddling and rowing.

During the Ubaid period, communities in the alluvial plain of southern Mesopotamia developed networks of canals and ditches to draw water from the Euphrates and Tigris onto fields of barley and emmer wheat.

The deliberate smelting of metal from ore, as opposed to merely hammering naturally occurring native copper, marks one of humanity's most consequential technological thresholds.

Around 4600 BCE, the Gunditjmara people of south-western Victoria, Australia, engineered an extensive aquaculture system across the basalt lava flows of the Budj Bim volcano, today recognised as one of the oldest and most extensive such…

From the fifth millennium BCE, farming communities across the Near East and Europe began to exploit domestic animals not only for meat but for renewable 'secondary' products — milk, wool and muscle power.

Sub-Saharan Africa became an independent centre of cereal domestication, with distinct crops adapted to the seasonal aridity of the Sahel and Sahara.

On the open grasslands of the central Eurasian steppe, the horse — long hunted for meat — began to be managed and kept by people.

Around the middle of the fourth millennium BCE the wheel-and-axle was harnessed for transport, producing the first wheeled vehicles.

By around 3500 BCE potters in southern Mesopotamia were using a true, continuously rotating potter's wheel, an advance over the slow hand-turned turntables (tournettes) in use since the sixth millennium.

During the Late Uruk period administrators in southern Mesopotamia began using cylinder seals: small engraved stone cylinders that, when rolled across wet clay, left a continuous raised image.

In 1991, hikers in the Ötztal Alps on the Italian–Austrian border found a naturally mummified human body melting out of a glacier.

Bone and ivory tags, pottery, and clay seal impressions bearing proto-hieroglyphic signs were deposited in Tomb U-j in the Umm el-Qaab necropolis at Abydos, the burial ground of Predynastic and Early Dynastic rulers.

In the administrative archives of Uruk, scribes pressed wedge-shaped marks and pictographic signs into clay tablets to record quantities of grain, livestock, labour and goods, producing the earliest known writing system, proto-cuneiform.

Around the turn of the fourth to third millennium BCE the rotary technology developed for the potter's wheel was adapted to transport, producing the first wheeled vehicles.

Eastern North America is recognised as one of at least a handful of world regions where plant domestication arose wholly independently.

During the Third Dynasty the pharaoh Djoser commissioned a monumental tomb at Saqqara that became the first large-scale stone building in the world and Egypt's first pyramid.

Among the public works of Mature Harappan Mohenjo-daro was the Great Bath, a watertight brick tank about 12 by 7 metres set atop the citadel mound, sealed with a thick layer of bitumen and fed and drained by carefully engineered channels.

Around 2600 BCE the Indus Valley Civilisation entered its Mature Harappan phase, marked by the deliberate construction of large, pre-planned cities, most famously Mohenjo-daro on the lower Indus and Harappa in the Punjab.

The Fourth Dynasty pharaoh Khufu (Cheops) commissioned the Great Pyramid on the Giza plateau, completed around 2560 BCE after roughly two to three decades of labour.

Harappan engineering reached its peak in Gujarat. At Lothal, founded around 2300 BCE near an old course of the Sabarmati, the people built a large baked-brick basin connected by channels to the river and sea, widely regarded as the…

In the steppe of the Southern Trans-Urals (modern Chelyabinsk and Orenburg oblasts of Russia and northern Kazakhstan), the Middle Bronze Age Sintashta-Petrovka culture (c.

In late 1924 a fossilised skull of a young hominin was recovered from the Buxton lime works near Taung, South Africa, and brought to anatomist Raymond Dart.

At the Egyptian turquoise-mining settlement of Serabit el-Khadim in the Sinai, and at Wadi el-Hol in Egypt, Semitic-speaking workers adapted a small number of Egyptian hieroglyphic signs into a radically simpler system in which each symbol…

The Minoans developed Linear A, a syllabic writing system used across Crete and on several Aegean islands roughly between 1850 and 1450 BCE, primarily on clay tablets, sealings and a range of votive and everyday objects.

Scribes of the Old Babylonian period developed a sophisticated place-value mathematics built on a sexagesimal (base-60) system, a choice whose highly divisible base (with factors 2, 3, 4, 5, 6, etc.) simplified work with fractions and…

Around 1650 BCE the scribe Ahmes copied the document now known as the Rhind Mathematical Papyrus, stating that he was reproducing an older text that may date to roughly 2000 BCE during the Middle Kingdom.

The Edwin Smith Papyrus, a copy dating to roughly 1600 BCE, is the oldest known surgical treatise on trauma and a milestone in the history of medicine.

Around the end of the second millennium BCE, ironworking shifted from a rare, prestige craft to a widespread technology, marking the transition from the Bronze Age to the Iron Age across the Near East and eastern Mediterranean.

Around 1250 BCE, during a great phase of fortification building across Mycenaean Greece, the citadel of Mycenae was enclosed by massive 'Cyclopean' walls — ramparts up to about 12 metres high and several metres thick, built of unworked…

The Houmuwu ding (formerly read Simuwu), a rectangular four-legged ritual cauldron unearthed near Anyang in 1939, is the heaviest piece of ancient bronze to survive anywhere in the world, standing 1.33 m tall and weighing about 833 kg.

By around 1050 BCE the linear Canaanite letter-forms had stabilised into the 22-consonant Phoenician alphabet, written right-to-left with fixed letter names, shapes and order.

By around 1000 BCE Babylonian scholars had compiled the astronomical compendium known as MUL.APIN ('the Plough Star'), the earliest surviving comprehensive treatise on Mesopotamian astronomy, written in cuneiform on clay tablets.

The Cascajal Block is a serpentine slab incised with 62 glyph-like signs, recovered from a gravel quarry in the Olmec heartland near San Lorenzo, Veracruz, and dated by associated ceramics and figurine fragments to about 900 BCE.

In the region of present-day central and northern Nigeria, east of the Niger River and north of the Benue, the Nok culture became one of the earliest iron-using societies in sub-Saharan Africa.

In anticipation of the Assyrian invasion of Judah by Sennacherib (701 BCE), King Hezekiah's engineers cut a winding tunnel roughly 533 metres long through bedrock to channel water from the Gihon Spring outside the walls to the Pool of…

Under Nebuchadnezzar II (r. 605–562 BCE) Babylon was rebuilt into the largest and most splendid city of its age.

The Sushruta Samhita, a foundational Sanskrit treatise traditionally attributed to the physician Sushruta and conventionally dated to around the 6th century BCE in northern India, systematically codified the surgical knowledge of the…

The Dong Son culture of the Red River Delta in northern Vietnam produced large ceremonial bronze drums (classified as Heger Type I) from roughly 600 BCE onward, with their floruit around 500 BCE and continuing into the early first…

By around the 5th century BCE, during the late Spring and Autumn and Warring States periods, Chinese metalworkers became the first in the world to produce cast iron on a significant scale, with the earliest securely dated cast-iron…

In the later fifth century BCE, the school associated with Hippocrates of Cos produced the earliest texts of the Hippocratic Corpus, foundational works of rational medicine.

Around 335 BCE Aristotle, former pupil of Plato and tutor of Alexander the Great, returned to Athens and founded his own school at the Lyceum, a gymnasium in a grove sacred to Apollo Lyceius.

The censor Appius Claudius Caecus began Rome's first aqueduct, the Aqua Appia, in 312 BCE (the same magistracy in which he started the Via Appia).

Around 300 BCE, working in Alexandria under the early Ptolemies, the mathematician Euclid composed the Elements, a treatise in thirteen books that organised the geometry and number theory of the Greek world into a single deductive system.

By around the mid-first millennium BCE, ironworkers in South India and Sri Lanka developed wootz, the world's first true high-carbon crucible steel, with the technique well established by roughly 300 BCE.

Archimedes of Syracuse, the foremost mathematician and engineer of antiquity, set out the law of buoyancy in his treatise On Floating Bodies (3rd century BCE): a body wholly or partly immersed in a fluid is buoyed up by a force equal to…

Around 240 BCE, Eratosthenes of Cyrene, chief librarian at Alexandria, calculated the circumference of the Earth using only geometry and shadows.

The Antikythera mechanism is a geared bronze device, dated to roughly 100 BCE (give or take a few decades), recovered in 1901 from a Roman-era shipwreck off the Greek island of Antikythera.

In the Fezzan region of southwestern Libya, the Garamantes — a Berber-speaking people centred on the capital Garama (modern Germa) — engineered an extensive system of underground irrigation tunnels known as foggaras (qanats).

A carved monument known as Stela 2 from Chiapa de Corzo in Chiapas, Mexico, bears a Long Count date corresponding to December 36 BCE (7.16.3.2.13), the earliest unambiguous Long Count inscription yet found.

The Pont du Gard, a three-tiered arched bridge rising about 47 metres above the Gardon river in southern Gaul, was built around the middle of the first century CE to carry an aqueduct supplying water to the Roman city of Nemausus (Nîmes).

The emperor Titus inaugurated the Flavian Amphitheatre — later known as the Colosseum — in 80 CE with some 100 days of games, completing a project begun under his father Vespasian around 70 CE on the site of the artificial lake of Nero's…

Around the turn of the 1st-2nd century CE, the physician-redactor Charaka revised and systematised an older medical compendium attributed to the teacher Atreya and his pupil Agnivesha, producing the Charaka Samhita, one of the two…

In 105 CE the eunuch court official Cai Lun reported to the Eastern Han emperor a refined method for making paper from cheap, abundant materials — macerated tree bark, hemp ends, old rags and fishing nets — pulped and dried into thin…

In 132 CE the Han polymath Zhang Heng — astronomer, mathematician and court official at Luoyang — presented the houfeng didong yi, the world's first known seismoscope.

Around 150 CE, Claudius Ptolemy of Alexandria completed the Mathematike Syntaxis, known later by its Arabic-derived title the Almagest ('the greatest').

The Bakhshali manuscript, a birch-bark arithmetical treatise discovered in 1881 near Peshawar, contains what radiocarbon dating at the University of Oxford (2017) identified as the world's oldest recorded use of the symbol for zero: a dot…

In 499 CE the astronomer-mathematician Aryabhata, working at Kusumapura (near Pataliputra) during the Gupta era, completed the Aryabhatiya, a concise verse treatise of 121 stanzas that became a foundation of classical Indian mathematics…

Between 605 and 609 the Sui emperor Yang mobilised millions of conscripted labourers to build and link a vast inland waterway system, the Grand Canal, connecting the rice-rich Yangtze valley in the south to the political heartland and…

In 628 CE the Indian mathematician and astronomer Brahmagupta completed the Brahmasphutasiddhanta ("Correctly Established Doctrine of Brahma") at Bhillamala (modern Bhinmal), then capital of the Gurjara realm in northwestern India.

Around 794–795, under the caliph Harun al-Rashid, the first recorded paper mill in the Islamic heartland was established in Baghdad, reportedly organised by the Barmakid vizier and using locally available techniques for producing paper…

Around 805 CE the Abbasid caliph Harun al-Rashid, working with his Barmakid vizier Yahya ibn Khalid, established what is traditionally regarded as the first true bimaristan, or general hospital, in Baghdad.

Working at the House of Wisdom in Baghdad under the caliph al-Ma'mun, the Persian scholar Muhammad ibn Musa al-Khwarizmi compiled, around 820, his treatise Al-Kitab al-mukhtasar fi hisab al-jabr wa-l-muqabala (The Compendious Book on…

Dated to 11 May 868 by its own colophon, the Chinese Diamond Sutra is the earliest complete, dated printed book known to survive, produced by woodblock printing during the late Tang dynasty.

The Persian physician Abu Bakr Muhammad ibn Zakariya al-Razi (Rhazes, c. 865–925), who served as chief physician in Baghdad, produced in the early tenth century his treatise Kitab fi al-jadari wa-l-hasba (A Treatise on Smallpox and…

Around the turn of the first millennium, Chinese tradition places the legendary origin of variolation, the earliest known technique for deliberately inducing immunity to smallpox by exposing healthy people to material from a mild case of…

Around the year 1000, the Andalusian physician Abu al-Qasim al-Zahrawi (Albucasis, c.

While residing at the fortress of Nandana in Pind Dadan Khan (in the Punjab region of present-day Pakistan), the Persian polymath Abu Rayhan al-Biruni devised an innovative method to determine the radius of the Earth using a single…

Between about 1020 and 1125 CE the Ancestral Puebloan builders of Chaco Canyon in present-day New Mexico carried out a series of vast additions to Pueblo Bonito, the largest of the canyon's great houses.

The Arab polymath Ibn al-Haytham (Latinised as Alhazen, c. 965 - c. 1040) composed his seven-volume Kitab al-Manazir (Book of Optics) in Cairo between roughly 1011 and 1021, traditionally during a period of house arrest under the Fatimid…

Around 1025 the Persian polymath Ibn Sina (Avicenna, c. 980–1037) completed al-Qanun fi al-tibb, the Canon of Medicine, a five-book encyclopedia that synthesised Greek, Roman, Persian and Indian medical traditions with his own…

Between roughly 1040 and 1048 the artisan Bi Sheng, working during China's Northern Song dynasty, invented the world's first known movable type, cutting an individual character into moist clay for each glyph and firing the pieces hard.

Compiled around 1040–1044 under the Northern Song dynasty by Zeng Gongliang and colleagues, the military encyclopaedia Wujing Zongyao ('Complete Essentials from the Military Classics') contains the earliest known written formulas for…

Between 1088 and 1092 the Song official and engineer Su Song (1020-1101) directed the construction at Kaifeng of a roughly ten-metre water-powered astronomical clock tower.

The earliest unambiguous descriptions of the magnetic compass appear in Song China.

In 1206, the polymath Badi al-Zaman Abu al-Izz Ismail ibn al-Razzaz al-Jazari (1136-1206) completed the Kitab fi Ma'rifat al-Hiyal al-Handasiyya (The Book of Knowledge of Ingenious Mechanical Devices) while serving as chief engineer at the…

Around 1242, the Arab physician Ala al-Din Ibn al-Nafis (c. 1213-1288) set out the first known description of the pulmonary (lesser) circulation of the blood in his Commentary on Anatomy in Avicenna's Canon (Sharh Tashrih al-Qanun).

Around 1286 an unknown craftsman in northern Italy, probably in the vicinity of Pisa, fixed two convex glass lenses in a frame of wood, bone or metal to create the first wearable eyeglasses, designed to correct the far-sightedness that…

In July 1377, monks at Heungdeok Temple in Cheongju, then part of Goryeo Korea, printed the Jikji (full title Baegun hwasang chorok buljo jikji simche yojeol), an anthology of Seon (Zen) Buddhist teachings compiled by the monk Baegun…

Around the turn of the fifteenth century in present-day Kerala, southern India, the mathematician and astronomer Madhava of Sangamagrama (c.

Around 1428, the Timurid ruler and astronomer Ulugh Beg, grandson of Timur (Tamerlane), completed a monumental observatory at Samarkand in Transoxiana (modern Uzbekistan).

In the German city of Mainz around 1440 to 1450 the goldsmith Johannes Gutenberg developed a system of printing with reusable cast-metal movable type, combining a durable type-metal alloy, oil-based ink and an adapted screw press into a…

Within fifty years of Gutenberg's movable-type press (c. 1455), printing spread explosively across Europe.

In 1543, as he lay dying, the Polish canon and astronomer Nicolaus Copernicus published De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres) at Nuremberg.

In 1543 the Flemish physician Andreas Vesalius, then only 28 and teaching at Padua, published De humani corporis fabrica libri septem (On the Fabric of the Human Body in Seven Books).

The Great Wall that survives as the iconic image of China is overwhelmingly a Ming-dynasty achievement, built and rebuilt in stone and brick across the later sixteenth century to defend the northern frontier against Mongol raids.

Completed in 1577, the Istanbul observatory of the Ottoman chief astronomer Taqi al-Din Muhammad ibn Ma'ruf was one of the largest astronomical observatories of the pre-modern world, conceived to rival Ulugh Beg's earlier Samarkand…

In 1609 the Italian natural philosopher Galileo Galilei learned of the newly invented spyglass, built improved versions reaching roughly twenty-fold magnification, and turned them on the night sky.

Working from the unprecedentedly precise observational data of his late employer Tycho Brahe, the German astronomer Johannes Kepler transformed the heliocentric model into a quantitatively accurate description of the heavens.

In 1628 the English physician William Harvey, physician to King Charles I, published at Frankfurt his short Latin treatise Exercitatio Anatomica de Motu Cordis et Sanguinis in Animalibus (An Anatomical Exercise on the Motion of the Heart…

On 28 November 1660 twelve natural philosophers met at Gresham College in London and resolved to found a 'College for the Promoting of Physico-Mathematical Experimental Learning'.

In 1687 Isaac Newton published Philosophiae Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), printed under the authorisation of the Royal Society after Edmond Halley urged him to write it and underwrote the…

Variolation, the deliberate inoculation of healthy people with material from smallpox pustules to induce a mild, survivable infection and lifelong immunity, was transmitted from Asia, Africa, and the Ottoman world into Western Europe and…

Onesimus, a West African man (likely of Akan/Coromantee origin from the region of modern Ghana) enslaved in Boston in the household of Puritan minister Cotton Mather, described around 1716 a longstanding African practice of inoculation…

Around 1724, Maharaja Sawai Jai Singh II of Amber and Jaipur, a Rajput astronomer-king serving under the Mughal emperor Muhammad Shah, began constructing a series of monumental masonry astronomical observatories in northern India…

In 1771 Richard Arkwright and his partners opened Cromford Mill in Derbyshire, England, the world's first purpose-built water-powered cotton-spinning factory, driven by Arkwright's water frame (patented 1769).

In 1774, a group of Japanese physicians led by Sugita Genpaku published Kaitai Shinsho ("New Book of Anatomy") in Edo, the first complete Japanese translation of a Western scientific text.

Building on his 1769 separate-condenser patent, James Watt, in partnership with the Birmingham manufacturer Matthew Boulton, introduced in 1781 a steam engine capable of producing continuous rotary motion through his 'sun-and-planet'…

On 14 May 1796, the English physician Edward Jenner performed a landmark experiment in Berkeley, Gloucestershire, that established the practice of vaccination.

In the first part of A New System of Chemical Philosophy (1808), the English chemist and meteorologist John Dalton set out a coherent atomic theory of matter, building on ideas he had been developing since around 1803.

On 27 September 1825 the Stockton and Darlington Railway in County Durham opened as the world's first public railway to use steam locomotives. On opening day George Stephenson's locomotive 'Locomotion No.

At the Rainhill Trials of 6-14 October 1829 the directors of the Liverpool and Manchester Railway held a public competition to decide what motive power their line should use.

On 29 August 1831, working at the Royal Institution in London, Michael Faraday demonstrated electromagnetic induction by winding two insulated coils on opposite sides of an iron ring: switching current on or off in one coil induced a…

On 7 January 1839 the painter and stage designer Louis-Jacques-Mande Daguerre presented his photographic process to the French Academie des Sciences, and on 19 August 1839 the details were publicly disclosed in Paris.

On 24 May 1844 Samuel F. B. Morse transmitted the message "What hath God wrought" from the Capitol in Washington to his partner Alfred Vail at a railroad station in Baltimore, the first public demonstration of his electromagnetic telegraph…

Across the mid-nineteenth century the science of thermodynamics took systematic shape.

On 4 October 1851 a telegraph circuit linking Calcutta with Diamond Harbour began operating, the first electric telegraph line on the Indian subcontinent.

During a severe cholera outbreak that struck the Soho district of London from late August 1854, killing more than 600 people, the physician John Snow conducted a pioneering epidemiological investigation.

The Third Plague Pandemic, the last of the three great bubonic plague pandemics caused by the bacterium Yersinia pestis, originated in China's Yunnan province around 1855, where mining booms and rising trade brought people into contact…

In August 1856 quarry workers clearing a limestone cave, the Kleine Feldhofer Grotte, in the Neander Valley (Neandertal) near Düsseldorf, Germany, uncovered a skullcap and limb bones with a heavy browridge and unusually thick, robust form.

In 1856 the English engineer Henry Bessemer publicly described his new process for making steel, presenting it on 11 August at the Cheltenham meeting of the British Association for the Advancement of Science after securing patents earlier…

After years of effort led by the American financier Cyrus Field, the first transatlantic telegraph cable was completed on 5 August 1858, and on 16 August Queen Victoria and President James Buchanan exchanged congratulatory messages, the…

On 24 November 1859 the English naturalist Charles Darwin published On the Origin of Species by Means of Natural Selection, arguing that the diversity of life arose through descent with modification from common ancestors, driven chiefly by…

In 1865 the Augustinian friar Gregor Mendel presented the results of eight years of breeding experiments with pea plants to the Natural History Society of Brünn (Brno, in the Austrian Empire), publishing them in 1866 as 'Experiments on…

Drawing on Louis Pasteur's emerging germ theory, the Scottish surgeon Joseph Lister concluded that the wound infections that killed many surgical patients were caused by airborne and contact microbes rather than by 'bad air'.

The Scottish physicist James Clerk Maxwell unified electricity, magnetism, and light into a single mathematical theory.

On 6 March 1869 (Old Style; 18 March by the Gregorian calendar) a paper by the Russian chemist Dmitri Mendeleev on 'The Dependence between the Properties of the Atomic Weights of the Elements' was read to the Russian Chemical Society in St…

The Suez Canal, a 100-mile waterway linking the Mediterranean and Red seas across the Isthmus of Suez, opened to navigation on 17 November 1869 after a decade of construction overseen by Ferdinand de Lesseps and the Suez Canal Company.

Following the Meiji Restoration of 1868, Japan undertook a rapid program of technological modernisation that placed it at the forefront of non-Western industrialisation.

On 7 March 1876 the U.S. Patent Office granted Alexander Graham Bell patent No. 174,465 for an "apparatus for transmitting vocal or other sounds telegraphically." Three days later, on 10 March, Bell transmitted the first intelligible…

On 31 December 1879 Thomas Edison publicly demonstrated a practical incandescent electric lamp at his Menlo Park, New Jersey, laboratory, where his team had developed a carbon-filament bulb that burned for many hours; special trains…

The germ theory of disease holds that specific microorganisms such as bacteria invade the body and cause specific infectious illnesses, overturning the long-dominant miasma theory that attributed disease to bad air.

On 6 July 1885 the French chemist Louis Pasteur, with physicians Jacques-Joseph Grancher and Alfred Vulpian, administered an experimental rabies vaccine to nine-year-old Joseph Meister, who had been severely bitten by a rabid dog days…

In 1885 the German engineer Carl Benz completed the Patent-Motorwagen, a three-wheeled vehicle powered by a compact, high-speed single-cylinder four-stroke internal-combustion engine, generally regarded as the world's first practical…

The War of the Currents pitted Thomas Edison's direct-current (DC) system against the alternating-current (AC) system championed by George Westinghouse and the inventor Nikola Tesla, whose polyphase AC induction motor and patents…

In the space of a few years a cluster of discoveries opened the study of radiation and the inner structure of the atom.

On 20 August 1897, while working in Secunderabad in British India, the army surgeon Ronald Ross dissected an Anopheles mosquito that had fed days earlier on a malaria patient and found the malarial parasite developing within cells of the…

On 12 December 1901 the Italian inventor Guglielmo Marconi reported receiving the first wireless signal transmitted across the Atlantic Ocean.

On the morning of 17 December 1903, near Kitty Hawk on the Outer Banks of North Carolina, the American brothers Orville and Wilbur Wright achieved the first sustained, controlled, powered flight of a heavier-than-air aircraft.

The Haber-Bosch process, which synthesises ammonia from atmospheric nitrogen and hydrogen under high temperature and pressure, reached industrial scale when BASF's Oppau plant in Germany went on-stream on 9 September 1913.

During the total solar eclipse of 29 May 1919, British expeditions led by Arthur Eddington (on Principe, off West Africa) and a Greenwich party at Sobral, Brazil, photographed stars near the obscured Sun and measured the deflection of…

On 2 November 1920, Westinghouse station KDKA in Pittsburgh transmitted returns from the Harding-Cox presidential election, an event widely cited as the first scheduled broadcast by a licensed commercial radio station.

Between 1925 and 1927 physicists developed a complete and self-consistent quantum mechanics, replacing the ad hoc 'old quantum theory' of Planck and Bohr.

In September 1928 Alexander Fleming, at St Mary's Hospital in London, observed that a contaminating mould of the genus Penicillium inhibited the growth of Staphylococcus bacteria on a culture plate, and he named the active substance…

The Douglas DC-3 was the airliner that made passenger flight commercially viable and turned aviation into a mass form of transport.

Nylon was the first fully synthetic fiber, a laboratory breakthrough that launched the age of man-made materials and reshaped everyday life.

The sulfa drugs were the first medicines able to cure a broad range of bacterial infections, opening the antibiotic age years before penicillin became available.

On 2 November 1936 the British Broadcasting Corporation began the world's first regular, public, high-definition television service from studios at Alexandra Palace in north London.

Alan Turing's paper "On Computable Numbers, with an Application to the Entscheidungsproblem" laid the theoretical foundation of the modern computer.

The Hindenburg disaster was the fiery destruction of the world's largest airship, a spectacle that abruptly ended commercial rigid-airship travel.

In December 1938, chemists Otto Hahn and Fritz Strassmann in Berlin, bombarding uranium with neutrons, identified barium among the products — evidence that the uranium nucleus had split, a result they confirmed on 19 December 1938.

In December 1947 John Bardeen and Walter Brattain at Bell Telephone Laboratories in New Jersey demonstrated the first working point-contact transistor, a semiconductor amplifier using a slab of germanium and closely spaced gold contacts…

On 25 April 1953 the journal Nature published a trio of papers describing the molecular structure of deoxyribonucleic acid (DNA).

On 1 March 1954 the United States detonated Castle Bravo, a lithium-deuteride-fuelled thermonuclear device, at Bikini Atoll in the Marshall Islands as the opening shot of Operation Castle.

On 4 October 1957 the Soviet Union launched Sputnik 1, the first artificial Earth satellite, from the Baikonur (Tyuratam) site in the Kazakh Republic.

In 1958–1959 the integrated circuit — multiple electronic components fabricated together on a single semiconductor chip — was independently conceived by Jack Kilby at Texas Instruments and Robert Noyce at Fairchild Semiconductor.

In October 1964 Japan announced its postwar recovery to the world, opening the first high-speed Shinkansen railway on 1 October and hosting the Olympic Games in Tokyo from 10 October.

The Green Revolution was a sweeping transformation of agriculture that brought high-yielding crop varieties, chemical fertilisers, irrigation, and modern farming methods to the developing world, with a decisive breakthrough in South Asia…

In 1966 the International Rice Research Institute in the Philippines released IR8, a high-yielding "miracle rice" that transformed food production across Asia and became a linchpin of the Green Revolution.

On 3 December 1967 surgeon Christiaan Barnard and a large team at Groote Schuur Hospital in Cape Town, South Africa, performed the first human-to-human heart transplant, placing the heart of accident victim Denise Darvall into Louis…

In 1968 clinical trials in Dhaka, published in The Lancet, demonstrated that a simple solution of water, salt, and sugar could treat the lethal dehydration of cholera and diarrhoea, a breakthrough the journal later hailed as potentially…

On 20 July 1969 the American Apollo 11 mission achieved the first crewed landing on the Moon.

On 29 October 1969 the first message was transmitted over the ARPANET, an experimental packet-switched computer network funded by the U.S. Department of Defense's Advanced Research Projects Agency.

Medical imaging was revolutionised on 1 October 1971 when engineer Godfrey Hounsfield and radiologist James Ambrose performed the first computed-tomography scan on a patient at Atkinson Morley Hospital in London, imaging a woman's brain…

The first general-purpose commercial microprocessor went on sale on 15 November 1971, when Intel introduced the 4-bit 4004 with a magazine ad announcing "a new era of integrated electronics." Designed by Ted Hoff, Stan Mazor and Federico…

Networked electronic mail was born in late 1971 when Ray Tomlinson, a programmer at Bolt, Beranek and Newman working on ARPANET, sent the first message between two computers connected by a network rather than sharing one machine.

Japan pushed its pioneering high-speed rail network deeper into western Honshu on 15 March 1972, when the Sanyo Shinkansen opened between Shin-Osaka and Okayama, extending the world-leading bullet-train system launched in 1964.

India entered the space age on 19 April 1975 with the launch of Aryabhata, its first satellite, making it the eleventh nation to place a spacecraft in orbit.

The Apple II, unveiled at the West Coast Computer Faire on 16–17 April 1977, helped transform computing from a hobbyist pursuit into a mass-market consumer product.

NASA launched Voyager 2 on 20 August 1977 and Voyager 1 on 5 September 1977 to exploit a rare planetary alignment that occurs only about once every 176 years, enabling a "Grand Tour" of the outer solar system.

Louise Joy Brown was born on 25 July 1978 at Oldham General Hospital in England, the first human conceived through in vitro fertilisation and a landmark in reproductive medicine.

On 8 May 1980 the World Health Assembly officially declared that smallpox had been eradicated, the first and so far only human disease to be eliminated worldwide through deliberate effort.

The world's first automatic cellular mobile-phone network opened in 1981, laying the groundwork for the wireless communications that would later reach billions.

IBM launched its Personal Computer in 1981, an event that made the desktop computer a mainstream business tool and set the standard the industry would follow for decades.

The compact disc reached consumers in 1982, launching the digital audio era that would transform how the world recorded, stored and listened to music.

British scientists revealed the existence of a vast seasonal hole in the ozone layer over Antarctica in a paper published in Nature on 16 May 1985, a discovery that transformed environmental policy worldwide.

The Space Shuttle Challenger broke apart 73 seconds after liftoff on 28 January 1986, killing all seven crew members before a national television audience that included schoolchildren watching to see the first teacher in space.

The computer scientist Tim Berners-Lee circulated a proposal at the CERN physics laboratory near Geneva on 12 March 1989 that laid the conceptual foundation for the World Wide Web, the system that would put a global information network…

On 30 April 1993 the European physics laboratory CERN, at the urging of the Web's inventor Tim Berners-Lee, signed a declaration placing the World Wide Web's underlying software and protocols into the public domain, making the technology…

Sony launched the PlayStation in Japan on 3 December 1994, upending the video-game industry and helping push gaming from a children's pastime into mainstream adult entertainment.

On 5 July 1996, scientists at the Roslin Institute near Edinburgh, Scotland, produced Dolly, the first mammal cloned from an adult somatic cell.

Highly active antiretroviral therapy (HAART) transformed AIDS from a death sentence into a manageable chronic illness, a breakthrough unveiled at the International AIDS Conference in Vancouver in July 1996.

On 4 September 1998 Larry Page and Sergey Brin, two Stanford University PhD students, incorporated Google, building on a research project begun in 1996 known as BackRub.

India and Pakistan openly joined the nuclear club in May 1998, detonating a rapid series of underground tests that transformed South Asia into a region of declared nuclear rivals.

On 14 April 2003 the International Human Genome Sequencing Consortium announced the essentially complete sequence of the human genome, more than two years ahead of schedule.

From around 2004 the United States made armed unmanned aerial vehicles a central instrument of the 'War on Terror', conducting covert targeted killings far from declared battlefields.

Unveiled by Steve Jobs on 9 January 2007 and released in the United States on 29 June 2007, Apple's iPhone combined a music player, mobile phone and internet device in a single product controlled almost entirely by a finger-driven…

The Large Hadron Collider (LHC), a 27-kilometre circular particle accelerator straddling the Franco-Swiss border at CERN near Geneva, first circulated proton beams on 10 September 2008.

Across the 2010s and into the 2020s the cost of renewable electricity fell so steeply that solar and wind became the cheapest sources of new power generation across most of the world, transforming the economics of decarbonisation.

In a paper published in the journal Science in June 2012, Jennifer Doudna of the University of California, Berkeley, and Emmanuelle Charpentier, then at Umeå University in Sweden, with colleagues including Martin Jinek, showed that the…

On 21 December 2015, the private American company SpaceX landed the first stage of its Falcon 9 rocket vertically at Cape Canaveral, Florida, after the booster had helped deliver eleven Orbcomm communications satellites to orbit.

On 14 September 2015 the twin detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO), in Hanford, Washington, and Livingston, Louisiana, recorded the first direct detection of gravitational waves, ripples in spacetime…

Between 9 and 15 March 2016 in Seoul, South Korea, AlphaGo, a program developed by the London-based DeepMind, defeated the world-class player Lee Sedol four games to one in the ancient board game Go.

In November 2018 the Chinese biophysicist He Jiankui, working at the Southern University of Science and Technology in Shenzhen, announced that he had used CRISPR-Cas9 gene editing to alter the embryos of twin girls, born in October 2018…

In March 2018 The Guardian and The New York Times revealed that political consulting firm Cambridge Analytica had harvested the personal data of up to 87 million Facebook users without consent, via a personality-quiz app, to build…

On 11 December 2020 the United States Food and Drug Administration granted emergency use authorisation to the Pfizer-BioNTech COVID-19 vaccine, the first messenger-RNA (mRNA) vaccine ever authorised for use in humans; the United Kingdom…

On 9 August 2021 the Intergovernmental Panel on Climate Change published the Working Group I contribution to its Sixth Assessment Report, 'Climate Change 2021: The Physical Science Basis'.

On 30 November 2022 the American company OpenAI released ChatGPT, a free conversational chatbot built on a large language model, as a research preview.

Between February and May 2025, physicians at the Children's Hospital of Philadelphia treated an infant named KJ Muldoon, born with the fatal urea-cycle disorder CPS1 deficiency, using the first-ever bespoke CRISPR base-editing medicine…

On 24 September 2025, the biotechnology firm uniQure reported pivotal trial results showing that its gene therapy AMT-130 slowed the progression of Huntington's disease by roughly 75 percent over three years, the first treatment ever to…