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A Civilization-inspired tech tree but for the real life history of science and discovery. Inventions and discoveries presented in illustrated Magic-style cards.
Culture
- Ceremonial burial 200,000 BCE
- Art 20,000 BCE
- Pottery 7,000 BCE
- Nations 3,100 BCE
- Candles 3,000 BCE
- Papyrus 3,000 BCE
- Calendar 2,800 BCE
- Literature 2,500 BCE
- Empires 2,340 BCE
- Code of Laws 1,775 BCE
- Phonetic alphabet 1,500 BCE
- Monotheism 1,375 BCE
- Resistant dyes 1,200 BCE
- Currency (Coins) 640 BCE
- Advanced schools 387 BCE
- Standardized years 240 BCE
- Parchment 170 BCE
- Tea 250
- Porcelain 700
- Block printing 700
- Coffee 850
- Forks 1071
- Mirrors 1291
- Mechanical clocks 1335
- Spring-powered watches 1504
- Tobacco 1556
- Scientific societies 1560
- Gregorian calendar 1582
- Scientific method 1620
- Science religion debates 1633
- Biblical earth age 1650
- Carriage springs 1706
- Mesmerism 1774
- Races 1776
- Popular mountain climbing 1786
- Insane asylums 1793
- Rosetta Stone 1799
- Phrenology 1810
- Hieroglyphics 1822
- Gilgamesh found 1872
- Eugenics 1883
- Talking pictures 1927
- Long-playing records 1948
Design
- Stone monuments 2,650 BCE
- Architectural arches 750 BCE
- Aqueducts 700 BCE
- Zoos 700 BCE
- Libraries 640 BCE
- Great Wall 214 BCE
- Architectural domes 537
- Flying buttresses 1137
- Perspective drawing 1436
- Spinning frame 1769
- Bifocal lenses 1784
- Canning food 1795
- Gas lighting 1800
- Jacquard loom 1801
- Practical Steamboat 1807
- Macadamized roads 1815
- Screw propeller 1827
- Mechanical reaper 1834
- Morse Code 1838
- Bicycle 1839
- Screw threads 1841
- Wheatstone bridge 1843
- Transatlantic liner 1843
- Sewing machine 1846
- Safety Pin 1849
- Reinforced Concrete 1849
- Elevators 1852
- Internal-combustion engine 1860
- Cylinder locks 1865
- Typewriters 1867
- Air brake 1868
- Stock ticker 1869
- Dry plates 1871
- Rayon 1883
- First automobile 1885
- Rubber tire 1887
- Home photography 1888
- Motion pictures 1889
- Submarine 1898
- Assembly line 1908
- Seaplanes 1911
- Self-starter 1911
- Nitrogen-filled light bulbs 1913
- Superheterodyne receiver 1917
- Computers 1930
- Ballpoint pen 1938
- Helicopter 1939
- Color television 1940
- UNIVAC 1951
- Spray cans 1953
- Photocopying 1958
- Electronic watch 1961
- Laser printers 1982
General
- Bipedal species 4,000,000 BCE
- Stone tools 2,000,000 BCE
- Fire tamed 500,000 BCE
- Oil lamps 20,000 BCE
- Animals domesticated 12,000 BCE
- Plants domesticated 8,000 BCE
- Linen 6,000 BCE
- Rafts 6,000 BCE
- Sickles 6,000 BCE
- Irrigation 5,000 BCE
- Copper 4,000 BCE
- Simple sundials 4,000 BCE
- Bronze 3,600 BCE
- Wheeled carts 3,500 BCE
- River boats 3,500 BCE
- Writing 3,500 BCE
- Plows 3,500 BCE
- Glass 2,500 BCE
- Horses 2,000 BCE
- Sea navigation 1,100 BCE
- Steel 1,000 BCE
- Realistic maps 510 BCE
- Ocean navigation 500 BCE
- Paved roads 312 BCE
- Tides 300 BCE
- Lighthouses 280 BCE
- Glass blowing 100 BCE
- Waterwheels 85 BCE
- Julian calendar 46 BCE
- Rudimentary steam motion 50
- Paper 105
- Wheelbarrows 400
- Turnplows 600
- Iron horseshoes 770
- Horse collars 900
- Windmills 1180
- Magnetic navigation 1180
- Coal mining 1228
- Rudders 1241
- Magnetic poles 1269
- Spinning wheels 1298
- Printing press 1454
- Magnetic declination 1492
- Stagecoaches 1620
- Plate glass 1688
- Newcomen steam engine 1712
- Ship’s chronometer 1728
- Franklin stove 1742
- Encyclopedia 1751
- Carbonated water 1768
- Improved steam engine 1781
- Steamboat 1787
- Industrial revolution 1790
- Cotton gin 1793
- Parachute 1798
- Interchangeable parts 1798
- Steam locomotive 1804
- Steamship 1819
- Portland cement 1824
- Practical steam locomotive 1825
- Turbines 1827
- Matches 1831
- Photographic negative 1841
- Refrigerators 1858
- Phonograph 1877
- Linotype 1884
- Fountain pen 1884
- Improved gliders 1891
- Robots 1954
- Pocket calculators 1971
Geography
- Spherical earth theory 350 BCE
- Earth size estimate 240 BCE
- Climactic zones 25
- Iceland settled 847
- Arctic circle 870
- Greenland 982
- Newfoundland discovered 1000
- Spitsbergen 1194
- Far east 1298
- Canary islands 1312
- Indian ocean 1405
- Madeira settled 1418
- Azores 1427
- Cape of Good Hope 1487
- New world 1492
- India water route 1497
- America 1502
- Pacific ocean 1513
- Florida 1513
- Mexico conquered 1519
- Earth circumnavigated 1523
- Peru conquered 1531
- Mississipi river 1541
- Amazon river 1542
- Northeastern passage 1553
- Greenland revisited 1576
- Drake Strait 1578
- Siberia settled 1581
- East indies settled 1596
- English America 1607
- French America 1608
- Baffin Bay 1616
- Tierra Del Fuego 1616
- New Zealand and Tasmania 1642
- Fossils 1669
- Trade winds mapped 1686
- Easter Island 1722
- Bering Strait 1728
- Shape of the Earth 1735
- Rocky Mountains 1739
- Nile river 1770
- Gulf stream 1770
- Antarctic Circle 1773
- Hawaiian Islands 1778
- Alaska 1784
- Columbia River 1792
- Vancouver Island 1792
- Across North America 1793
- Strata 1799
- Missouri River 1804
- Antarctic land 1820
- Glaciers 1821
- North magnetic pole 1831
- Ice age 1837
- Antarctica 1839
- Ross ice shelf 1839
- Cuneiform decipherment 1846
- Telegraph plateau 1854
- Source of the white nile 1862
- Greenland ice cap 1888
- Arctic ocean 1894
- Knossos excavation 1900
- North pole 1909
- South pole 1911
- Jet streams 1945
Math
- Weight scales 5,000 BCE
- Number system 1,800 BCE
- Irrational numbers 520 BCE
- Abacus 500 BCE
- Logic 350 BCE
- Geometry 300 BCE
- Water clocks 270 BCE
- Lever mathematics 260 BCE
- Algebra 250
- Zero 810
- Arabic numerals 1202
- Cubic equations 1535
- Math of heliocentricity 1543
- Negative numbers 1545
- Trigonometric tables 1551
- Mercator projection 1568
- Positional notation 1586
- Code breaking 1589
- Algebraic symbols 1591
- PI accuracy 1596
- Logarithms 1614
- Slide rules 1622
- Cartesian geometry 1637
- Fermat's last theorem 1637
- Probability 1654
- Calculus 1669
- Complex numbers 1685
- Calculating machines 1693
- Mortality tables 1693
- Binary system 1700
- Goldbach’s conjecture 1742
- Transcendental numbers 1744
- Algebra and mechanics 1788
- Heptadecagon 1796
- Fourier analysis 1822
- Projective geometry 1822
- No quintic equation 1824
- Non-Euclidean geometry 1826
- Group theory 1830
- Trisecting an angle 1837
- Quaternions 1843
- Higher analytic geometry 1843
- Symbolic logic 1847
- Riemann geometry 1854
- Möbius strip 1865
- Transcendental e 1873
- Transfinite numbers 1874
- Venn diagram 1881
- Transcendental pi 1882
- Axiomatics 1889
- Logic and geometry 1899
- Symbolic logic and mathematics 1902
- Mathematics and logic 1910
- Game theory 1928
- Gödel's proof 1931
- Fermat's last theorem proof 1993
Science
- Fermentation 1,800 BCE
- Recorded medicine 1,550 BCE
- Improved sundials 700 BCE
- Water as element 580 BCE
- Human dissection 500 BCE
- Dream interpretation 480 BCE
- Atoms 440 BCE
- Epilepsy 420 BCE
- Five elements theorized 350 BCE
- Animal classification 350 BCE
- Botany book 320 BCE
- Arteries vs veins 300 BCE
- Parts of brain 280 BCE
- Recorded medicinal plants 50
- Spinal cord 180
- Recorded alchemy 300
- Silk 552
- Acetic acid 750
- Optics 1025
- Eyeglasses invented 1249
- Sulfuric acid 1300
- Liquor distillation 1300
- Anatomy book 1316
- Quarantine 1403
- Concave lenses 1451
- Syphilis 1495
- Illustrated anatomy book 1543
- Rational surgery 1545
- Eustacian tubes 1552
- Vertebrate skeletons 1555
- Mining book 1556
- Pendulums for time 1581
- Hydrostatics 1583
- Falling motion 1589
- Stocking frame 1589
- Microscope 1590
- Thermometer 1592
- Chemistry book 1597
- Earth as giant magnet 1600
- Vein valves 1603
- Telescope 1608
- Biological metabolism 1614
- Light refraction 1621
- Gas state 1624
- Aurochs extinction 1627
- Blood circulation 1628
- Shifting magnetic declination 1635
- Cross hairs 1641
- Quinine 1642
- Mechanical calculators 1642
- Barometers 1643
- Air pumps 1645
- Air pressure altitude 1648
- Lymphatic vessels 1653
- Early pneumatics 1654
- Grandfather clocks 1656
- Falling motion experiment 1657
- Red blood cells 1658
- Capillaries 1660
- Static electricity 1660
- Scientific chemistry 1661
- Acid-base balance 1661
- Boyle's law 1662
- Royal Society 1662
- Cells 1665
- Diffraction 1665
- Prisms 1666
- Conservation of momentum 1668
- No spontaneous generation 1668
- Reflecting telescopes 1668
- Phosphorus 1669
- Double refraction 1669
- Blood colors 1669
- Diabetes diagnosed 1670
- Speed of light 1675
- Microorganisms 1676
- Light as wave 1678
- Pressure cookers 1679
- Human kinetics 1680
- Dodo extinct 1681
- Plant sexuality 1682
- Bacteria 1683
- Plant species classified 1686
- Laws of motion 1687
- Universal graviation 1687
- Non-spherical earth 1687
- Improved animal classifications 1691
- Miner's friend 1698
- Scientific ocean voyages 1698
- Gas volume temperature 1699
- Plant Nourishment 1705
- Improved static generator 1706
- Pulse watch 1707
- Coke and iron 1709
- Smallpox inoculation 1713
- Mercury thermometer 1714
- Aberration of light 1728
- Dentistry 1728
- Electrical conductance 1729
- Achromatic lens 1733
- Blood pressure 1733
- Positive and negative charge 1733
- Flying shuttle 1733
- Taxonomy 1735
- Trade winds 1735
- Mechanics 1736
- Cobalt 1737
- Kinetic gases 1738
- Hydra 1740
- Celsius scale 1742
- Leyden jar 1745
- Blood and iron 1745
- Scurvy 1747
- Osmosis 1748
- Platinum 1749
- Biological evolution 1749
- Nickel 1751
- Lightning rod 1752
- Digestion 1752
- Earth and heat 1752
- Carbon dioxide 1754
- Land bridges 1756
- Flame tests 1758
- Embryology 1759
- Earthquakes 1760
- Heat capacity 1760
- Pathology 1760
- Medical percussion 1761
- Latent heat 1762
- Pollination 1763
- Steam engine 1764
- Plutonism 1765
- Hydrogen 1766
- Experiments on nerves 1766
- Definitely no spontaneous generation 1768
- Quantitative chemistry 1769
- Soluble gases 1770
- Nebulas 1771
- Plants and carbon dioxide 1771
- Combustion and phlogiston 1772
- Diamond 1772
- Nitrogen 1772
- Bacilli 1773
- Oxygen 1774
- Chlorine oxygen 1774
- Digitalis 1775
- Torsion balance 1777
- Respiration and combustion 1777
- Molybdenum 1778
- Fertilization 1779
- Photosynthesis 1779
- Electrical stimulation 1780
- Crystallography 1781
- Tellurium 1782
- Balloon 1783
- Tungsten 1783
- Volcanoes 1783
- Hydrogen and water 1784
- Uniformitarianism 1785
- Charles's law 1787
- Chemical nomenclature 1787
- Affinities 1789
- Acids 1789
- Conservation of mass 1789
- Uranium 1789
- The metric system 1790
- Titanium 1791
- Rare earths 1794
- Vaccination 1796
- Chromium 1797
- Mass of the Earth 1798
- Comparative anatomy 1798
- Population growth theory 1798
- Liquid ammonia 1798
- Beryllium 1798
- Law of definite proportions 1799
- Electric battery 1800
- Decomposition of water 1800
- Infrared radiation 1800
- Nitrous oxide 1800
- Tissues 1800
- Malleable platinum 1801
- Invertebrates 1801
- Ultraviolet 1801
- Light waves 1801
- Discovery of niobium 1801
- Tantalum 1802
- Atomic theory 1803
- Cerium, Osmium, Iridium 1803
- Scientific ballooning 1804
- Morphine 1805
- Asparagine 1806
- Sodium and potassium 1807
- Polarized light 1808
- Mechanism of evolution 1809
- Aerodynamics 1809
- Chlorine 1810
- Avogadro's hypothesis 1811
- Iodine 1811
- Catalysis 1812
- Catastrophism 1812
- Universe as machine 1812
- Chemical symbols 1813
- Plant classification 1813
- Spectral lines 1814
- Plane of polarized light 1815
- Organic radicals 1815
- Prout's hypothesis 1815
- Stethoscope 1816
- Chlorophyll 1817
- Cadmium, Lithium, Selenium 1817
- Transverse light waves 1818
- Atomic weights 1818
- Specific heat 1819
- Electromagnetism 1820
- Simple electromagnet 1820
- Glycine 1820
- Diffraction gratings 1821
- Electrical motion 1821
- Seebeck effect 1821
- Analytical engine 1822
- Iguanodon 1822
- Gastric acidity 1823
- Platinum as catalyst 1823
- Isomers 1823
- Liquefying gases 1823
- Electromagnets 1823
- Steam engine efficiency 1824
- Silicon 1824
- Aluminum 1825
- Gastric digestion 1825
- Modern candles 1825
- Astigmatism 1825
- Discovery of bromine 1826
- Ohm's Law 1827
- Mammalian ova 1827
- Food classification 1827
- Brownian motion 1827
- Synthetic urea 1828
- Notochord 1828
- Thorium 1828
- Nicol prism 1829
- Achromatic microscopes 1830
- Uniformitarianism improved 1830
- Electric generators 1831
- Electric motors 1831
- Cell nucleus 1831
- Diffusion 1831
- Chloroform 1831
- Cyclonic storms 1831
- Laws of electrolysis 1832
- Diastase 1833
- Cellulose 1833
- Dry ice 1835
- Coriolis effect 1835
- Pepsin 1836
- Daniell cell 1836
- Chlorophyll and cells 1837
- Distance of stars 1838
- Cell theory 1838
- Yeast cells 1838
- Protein 1838
- Photography 1839
- Vulcanization of rubber 1839
- Fuel cell 1839
- Lanthanum 1839
- Thermochemistry 1840
- Ozone 1840
- Hypnotism 1841
- Chemical fertilizer 1842
- Doppler effect 1842
- Cranial Index 1842
- Mechanical equivalent of heat 1843
- Telegraph 1844
- Permanent gases 1845
- Anesthesia 1846
- Crystal asymmetry 1846
- Protoplasm 1846
- Conservation of energy 1847
- Puerperal fever 1847
- Painless childbirth 1847
- Nitroglycerine 1847
- Silver fillings 1847
- Absolute zero 1848
- Spectral line shift 1848
- Speed of light refraction 1849
- Nerve fibers 1849
- Second law of thermodynamics 1850
- Infrared waves 1850
- Rotation of the earth 1851
- Joule-thomson effect 1852
- Valence theory 1852
- Gyroscope 1852
- Glider 1853
- Kerosene 1853
- Cholera 1854
- Lines of force 1855
- Geissler tubes 1855
- Seismograph 1855
- Pyroxylin 1855
- Glycogen 1856
- Bessemer steel 1856
- Synthetic dyes 1856
- Neanderthal man 1856
- Pasteurization 1856
- Evolution by natural selection 1858
- Organic molecular structure 1858
- Cellular pathology 1858
- Electricity in a vacuum 1858
- Oil wells 1859
- Storage battery 1859
- Spectral lines and elements 1859
- Kinetic theory of gases 1859
- Spontaneous generation R. I. P. 1860
- Organic synthesis 1860
- Avogadro's hypothesis revived 1860
- Blackbody Radiation 1860
- Archeopteryx 1861
- Broca's area 1861
- Thallium 1861
- Germ theory of disease 1862
- Hydrogen in the sun 1862
- Chloroplasts 1862
- Hemoglobin 1862
- Greenhouse effect 1863
- Law of octaves 1863
- Barbiturates 1863
- Indium 1863
- Genetics 1865
- Benzene ring 1865
- Avogadro’s number 1865
- Antiseptic surgery 1865
- Maxwell’s equations 1865
- Dynamite 1866
- Clinical thermometer 1866
- Earth's iron core 1866
- Dry cell 1867
- Law of mass action 1867
- Cro-magnon man 1868
- Deep-sea life 1868
- Periodic table of the elements 1869
- Nucleic acid 1869
- Critical temperature 1869
- Biogeography 1869
- Islets of langerhans 1869
- Celluloid 1869
- Troy 1870
- Human evolution 1871
- Plant strains 1871
- Bacteriology 1872
- Experimental psychology 1872
- Gas laws 1873
- Leprosy 1873
- Platelets 1873
- Gallium 1874
- Tetrahedral carbon atom 1874
- Current and crystals 1874
- Fertilization observed 1875
- Radiometer 1875
- Telephone 1876
- Four-stroke engine 1876
- Chemical thermodynamics 1876
- Bacterial cultivation 1876
- Cathode rays 1876
- Protein size 1877
- Liquid oxygen 1877
- Enzyme 1878
- Varves 1878
- Ytterbium 1878
- Electric light 1879
- Saccharin 1879
- Scandium 1879
- Thulium, holmium, and samarium 1879
- Heat and radiation 1879
- Malaria 1880
- Modern seismograph 1880
- Gadolinium 1880
- Unconscious mind 1880
- Electromechanical calculator 1880
- Charged cathode rays 1880
- High pressure 1880
- Piezoelectricity 1880
- Interferometer 1881
- Anthrax inoculation 1881
- Pneumococcus 1881
- Chromatin 1882
- Speed of light interferometer 1882
- Improved diffraction gratings 1882
- Tuberculosis 1882
- Alloy steel 1883
- Alternating currents 1883
- Edison effect 1883
- Meiosis 1883
- Phagocytes 1883
- Diphtheria 1883
- Stefan-boltzmann law 1884
- Ionic dissociation 1884
- Sugar structure 1884
- Cocaine 1884
- Bacterial staining 1884
- Steam turbine 1884
- Rabies 1885
- Purines and pyrimidines 1885
- Praseodymium and neodymium 1885
- Welsbach mantle 1885
- Transformer 1885
- Fingerprints 1885
- Aluminum process 1886
- Germanium 1886
- Fluorine 1886
- Dysprosium 1886
- Canal rays 1886
- Raoult's law 1886
- Nitrogen fixation 1886
- Michelson-Morley experiment 1887
- Photoelectric effect 1887
- Mach number 1887
- Radio waves 1888
- Le Châtelier's principle 1888
- Chromosome 1888
- Neuron theory 1889
- Tetanus 1889
- Energy of activation 1889
- Antitoxin 1890
- Java man 1890
- Surgical gloves 1890
- Gravitational and inertial mass 1890
- Fundamental unit of electricity 1891
- Carborundum 1891
- Light pressure 1892
- Fitzgerald contraction 1892
- Dewar flask 1892
- Psychoanalysis 1893
- Cattle fever 1893
- Wavelengths and temperature 1893
- Alternating current theory 1893
- Argon 1894
- X-rays 1895
- Cathode ray particles 1895
- Velocity and mass 1895
- Helium on earth 1895
- Curie temperature 1895
- Radio antennas 1895
- Uranium radiations 1896
- Dietary deficiency diseases 1896
- Light and magnetism 1896
- Ferments and enzymes 1896
- Acoustics 1896
- Electron as subatomic particle 1897
- Uranium radiation quantified 1897
- Alpha rays and beta rays 1897
- Nickel as catalyst 1897
- Mosquitoes and malaria 1897
- Oscilloscope 1897
- Diesel engine 1897
- Polonium and radium 1898
- Neon, krypton, and xenon 1898
- Liquid hydrogen 1898
- Filtrable virus 1898
- Mitochondria 1898
- Epinephrine 1898
- Actinium 1899
- Solid hydrogen 1899
- Quanta 1900
- Mass increase 1900
- Beta particles electrons 1900
- Gamma rays 1900
- Radon 1900
- Atomic change 1900
- Electron emission 1900
- Mutations 1900
- Blood types 1900
- Yellow fever 1900
- Dreams 1900
- Tryptophan 1900
- Free radicals 1900
- Dirigible 1900
- Radioactive energy 1901
- Radio 1901
- Europium 1901
- Grignard reagents 1901
- Chromosomes and inheritance 1902
- Secretin 1902
- Animal inheritance 1902
- Anaphylactic shock 1902
- Sutures 1902
- Radioactive series 1902
- Photoelectric effect and electrons 1902
- Kennelly-heaviside layer 1902
- Stratosphere 1902
- Ultramicroscope 1902
- Airplane 1903
- Electrocardiogram 1903
- Electronic rectifier 1904
- Atomic structure 1904
- Coenzyme 1904
- Organic tracers 1904
- Novocaine 1904
- Special relativity 1905
- Mass-energy 1905
- Photoelectric effect and quanta 1905
- Brownian motion and atomic-size 1905
- Metabolic intermediate 1905
- Hormones 1905
- Linkage of characteristics 1905
- Higher pressure 1905
- Intelligence quotient 1905
- Radio waves and sound 1906
- Triode 1906
- Alpha particles 1906
- Characteristic X rays 1906
- Third law of thermodynamics 1906
- Vitamin concept 1906
- Magnesium and chlorophyll 1906
- Chromatography 1906
- Radioactivity and earth 1906
- Radioactive dating 1907
- Lutetium 1907
- Synthetic peptides 1907
- Chemotherapy 1907
- Fruit flies 1907
- Tissue culture 1907
- Conditioned response 1907
- Space-time 1907
- Genes 1907
- Atomic size 1908
- Liquid helium 1908
- Geiger counter 1908
- Rickettsia 1908
- Haber process 1908
- Syphilis treatment 1909
- Typhus 1909
- Ribose 1909
- Tungsten wire 1909
- Bakelite 1909
- Mohorovičić discontinuity 1910
- Neon lights 1910
- Sex-linked characteristics 1910
- Nuclear atom 1911
- Cloud chamber 1911
- Electron charge 1911
- Cosmic rays 1911
- Superconductivity 1911
- Chromosome maps 1911
- Tumor virus 1911
- Earthquakes and faults 1911
- Continental drift 1912
- X-ray diffraction 1912
- Neon varieties 1912
- Dipole moments 1912
- Vitamins 1912
- Coal hydrogenation 1912
- Isotopes 1913
- Lead isotopes 1913
- Quantized atom 1913
- Coolidge tube 1913
- Stark effect 1913
- Ozonosphere 1913
- Vitamins A and B 1913
- Michaelis-menten equation 1913
- Glycolysis 1913
- Atomic number 1914
- X-ray wavelength 1914
- Ions and crystals 1914
- Beta-particle energies 1914
- Proton 1914
- Acetylcholine 1914
- Earth's mantle and core 1914
- Behaviorism 1914
- Pellagra 1915
- Thyroxine 1915
- Bacteriophages 1915
- Elliptical electron orbits 1915
- Hydrogen-Helium conversion 1915
- General relativity 1916
- Electrons and chemical bonds 1916
- Microcrystalline diffraction 1917
- Protactinium 1917
- Sonar 1917
- Radioactive lead tracing 1918
- Embryo organizer 1918
- Mass spectrometer 1919
- Nuclear reaction 1919
- Gravitational deflection of light 1919
- Bee communication 1919
- Dendrochronology 1920
- Climatic cycles 1920
- Anemia cure 1920
- Air masses 1920
- Insulin 1921
- Vagusstoffe 1921
- Rickets 1921
- Glutathione 1921
- Magnetrons 1921
- Tetraethyl lead 1921
- Introvert and extrovert 1921
- Rorschach test 1921
- Sumeria 1922
- Tutankhamen's tomb 1922
- Vitamin E 1922
- Growth hormone 1922
- Lysozyme 1922
- Origin of life 1922
- Electric nerve fibers 1922
- Waves as particles 1923
- Particles as waves 1923
- Debye-Huckel equations 1923
- Acid-base pairs 1923
- Coenzyme structure 1923
- Hafnium 1923
- Ultracentrifuge 1923
- Australopithecus 1924
- Bose-einstein statistics 1924
- Ionosphere 1924
- Cytochrome 1924
- Irradiation 1924
- Packing fraction 1925
- Exclusion principle 1925
- Particle spin 1925
- Matrix mechanics 1925
- Magnetism and absolute zero 1925
- Gravitational red shift 1925
- Rhenium 1925
- Morphine synthesis 1925
- Parathormone 1925
- Iron and Cytochrome 1925
- Wave mechanics 1926
- Wave packets 1926
- Fermi-dirac statistics 1926
- Liquid-fuel rockets 1926
- Enzyme crystallization 1926
- Pernicious anemia 1926
- Uncertainty principle 1927
- Electron diffraction 1927
- Speed of light mountains 1927
- Electron bonds 1927
- Peking man 1927
- X rays and mutations 1927
- M and N blood groups 1927
- Penicillin 1928
- Diels-Alder reaction 1928
- Raman spectra 1928
- Hexuronic acid 1928
- Solar energy 1929
- Coincidence counter 1929
- Particle accelerator 1929
- Oxygen isotopes and atomic weights 1929
- Deoxyribose 1929
- Heme 1929
- Estrone 1929
- Intrinsic factor 1929
- Electroencephalography 1929
- Cardiac catheter 1929
- Child development 1929
- Antimatter 1930
- Cyclotron 1930
- Enzyme crystallization confirmed 1930
- Vitamin A structure 1930
- Freon 1930
- Neutrino 1931
- Deuterium 1931
- Resonance 1931
- Androsterone 1931
- Neoprene 1931
- Nylon 1931
- Virus particles 1931
- Virus culture 1931
- Stratospheric balloons 1931
- Neutron 1932
- Proton-neutron nucleus 1932
- Positron 1932
- Particle accelerator and nuclear reaction 1932
- Electron microscope 1932
- Prontosil 1932
- Ascorbic acid 1932
- Urea cycle 1932
- Polaroid 1932
- Quinacrine 1932
- Synthetic vitamin C 1933
- Molecular beams 1933
- Approach to absolute zero 1933
- Neutron bombardment 1934
- Weak interaction 1934
- Artificial radioactivity 1934
- Cherenkov radiation 1934
- Sex hormones 1934
- Bathyspheres 1934
- Uranium-235 1935
- Isotopic tracers 1935
- Crystalline viruses 1935
- Strong Interaction 1935
- Sulfanilamide 1935
- Riboflavin 1935
- Corticoids 1935
- Prostaglandins 1935
- Radar 1935
- Imprinting 1935
- Richter scale 1935
- Neutron absorption 1936
- Thiamine 1936
- Perfusion pump 1936
- Technetium 1937
- Muon 1937
- Electrophoresis 1937
- Improved electron microscope 1937
- Field-emission microscope 1937
- Virus nucleic acid 1937
- Citric acid cycle 1937
- Niacin 1937
- Yellow fever vaccine 1937
- Evolution and mutation 1937
- Solar energy source 1938
- Magnetic resonance 1938
- Vitamin e synthesis 1938
- Phase-contrast microscope 1938
- Iconoscope 1938
- Xerography 1938
- Coelacanth 1938
- Nuclear fission 1939
- Nuclear chain reaction 1939
- Francium 1939
- Magnetic moments 1939
- Vitamin K 1939
- Rh factor 1939
- Practical Penicillin 1939
- Tyrothricin 1939
- Essential minerals 1939
- DDT 1939
- Frequency modulation 1939
- Neptunium and plutonium 1940
- Uranium hexafluoride 1940
- Astatine 1940
- Betatron 1940
- Streptomycin 1940
- High-energy phosphate 1941
- Polarimetry 1941
- Cardiac catheterization practice 1941
- Jet planes 1941
- Neurospora 1941
- Nuclear reactor 1942
- Biotin 1942
- Bacteriophage structure 1942
- Adrenocorticotrophic hormone 1943
- Lysergic acid diethylamide 1943
- Aqualung 1943
- DNA as genetic material 1944
- Paper chromatography 1944
- Teflon 1944
- Synthesis of quinine 1944
- 2,4-D 1944
- Americium and curium 1944
- Synchrocyclotron 1945
- Promethium 1945
- Viral mutations 1945
- Artificial kidneys 1945
- ENIAC 1946
- Nuclear magnetic resonance 1946
- Noradrenaline 1946
- Bacterial genetics 1946
- Virus genetics 1946
- Cloud-seeding 1946
- Pion 1947
- Carbon-14 dating 1947
- Coenzyme A 1947
- Chloramphenicol 1947
- Holography 1947
- Land camera 1947
- Supersonic flight 1947
- Television in the home 1947
- Transistor 1948
- Cybernetics 1948
- Nuclear structure 1948
- Quantum electrodynamics 1948
- The Big Bang 1948
- Nucleic acid-base balance 1948
- Cyanocobalamin 1948
- Cortisone and arthritis 1948
- Tetracyclines 1948
- Tissue transplantation 1948
- Virus culture improved 1948
- Starch chromatography 1948
- Bathyscaphe 1948
- Atomic clock 1949
- Berkelium and californium 1949
- Sickle-cell anemia 1949
- Embryonic immunological tolerance 1949
- Essential amino acids 1949
- Turing machine 1950
- Game-playing computers 1950
- Endoplasmic reticulum 1950
- Carbon-14 tracer 1950
- Breeder reactors 1951
- Stellarator 1951
- Superconductivity theory 1951
- Steroid synthesis 1951
- Acetylcoenzyme A 1951
- Fluoridation 1951
- Einsteinium and Fermium 1952
- Kaons and Hyperons 1952
- Origin of life experiment 1952
- X-ray diffraction of DNA 1952
- Insulin structure 1952
- Virus transduction 1952
- Radioimmune assay 1952
- REM sleep 1952
- Tranquilizers 1952
- Gas chromatography 1952
- Zone refining 1952
- The double helix 1953
- Isotactic polymers 1953
- Plate tectonics 1953
- Bubble chambers 1953
- Strange particles 1953
- Masers 1953
- Heart-lung machine 1953
- Transistorization 1953
- Salk vaccine 1954
- Kidney transplant 1954
- Controlled fission reactors 1954
- Oxytocin synthesis 1954
- Chloroplast isolation 1954
- Strychnine synthesis 1954
- Genetic code theory 1954
- Photovoltaic cells 1954
- Bevatron 1954
- Oral contraceptives 1954
- Contact lenses 1954
- Antiproton 1955
- Mendelevium 1955
- Synthetic diamonds 1955
- Field ion microscopes 1955
- Nucleic acid formation 1955
- Cyanocobalamin structure 1955
- Detection of the neutrino 1956
- Conservation of parity 1956
- Antineutron 1956
- Continuous maser 1956
- Ribosomes 1956
- Transfer RNA 1956
- Pituitary hormones 1956
- Photosynthesis details 1957
- Gibberellins 1957
- Interferon 1957
- Sabin vaccine 1957
- Pacemaker 1957
- Tunnel diode 1957
- Borazon 1957
- Mössbauer effect 1958
- Magnetosphere 1958
- Nobelium 1958
- Hemoglobin structure 1959
- Homo habilis 1959
- Spark chamber 1959
- Color vision 1959
- Laser 1960
- General relativity proof 1960
- Standard meter 1960
- Integrated circuits 1960
- Resonance particles 1960
- Sea-floor spreading 1960
- Cyclic-AMP 1960
- Chlorophyll synthesis 1960
- Heliosphere 1961
- Quarks 1961
- Lawrencium 1961
- Genetic code 1961
- Gene regulators 1961
- Communications satellites 1962
- Noble gas compounds 1962
- Closer to absolute zero 1962
- Light-emitting diodes 1962
- Environment 1962
- Hydroxyl group detection 1963
- Magnetic reversals 1963
- Background microwave radiation 1964
- Omega-minus particle 1964
- CPT symmetry 1964
- Transfer-RNA structure 1964
- Rutherfordium 1964
- Holograms 1965
- Microfossils 1965
- Protein synthesis 1965
- Heart transplants 1967
- Vertebrate clones 1967
- Hahnium 1967
- Electroweak interaction 1968
- Solar neutrinos 1968
- Astrochemistry 1968
- Optical pulsars 1969
- Antarctic meteorites 1969
- Protein structure 1969
- Artificial heart implant 1969
- Coronary bypass surgery 1969
- Black hole evaporation 1970
- Meteoritic amino acids 1970
- Gene synthesis 1970
- Recombinant DNA 1970
- Reverse transcriptase 1970
- Megavitamin therapy 1970
- Fiber optics 1970
- Scanning electron microscope 1970
- Supersonic transport 1970
- Black hole detection 1971
- Mini-black holes 1971
- Vitamin B-12 synthesis 1972
- Punctuated evolution 1972
- Speed of light lasers 1972
- Earth resources satellites 1972
- Quantum Chromodynamics 1972
- CAT scan 1972
- Laser disks 1972
- Origin of the universe 1973
- Genetic engineering 1973
- Proton decay 1973
- Freon and the ozone layer 1974
- Tauon 1974
- Charmed quarks 1974
- Microchips 1975
- Endorphins 1975
- String theory 1976
- Synthetic gene 1977
- Inflationary universe 1977
- Deep-sea ecosystems 1977
- Lucy discovery 1977
- Nonbacterial DNA 1977
- Smallpox eradication 1977
- Aids emergence 1977
- Fiber optic communication 1977
- Balloon angioplasty 1977
- Oncogenes 1978
- Virus genome 1978
- Test-tube baby 1978
- Extinction of the dinosaurs 1979
- Gluons 1979
- Neutrino mass 1980
- Magnetic monopoles 1982
- Jarvik hearts 1982
- W particles 1983
- Nuclear winter 1983
- Dna and human evolution 1984
- Ozone hole 1985
- Warm superconductivity 1987
- Shroud of Turin 1988
- Greenhouse effect impact 1988
- Cold fusion 1989
- Genetic medicine 1990
- Fullerene research 1991
- Background microwave radiation experiment 1992
- Larger Role for RNA 1992
Space
- Solar eclipse predicted 585 BCE
- Venus named 500 BCE
- Non-geocentric theory 350 BCE
- Star maps 350 BCE
- Moon and sun size estimate 280 BCE
- Distance to moon estimate 150 BCE
- Better star maps 134 BCE
- Geocentric universe 140
- New star 1054
- Bright comets 1066
- Planetary tables 1252
- Realistic comets 1304
- Comet trajectory tracking 1472
- Comet tails 1538
- Better planetary tables 1551
- Supernova 1572
- Comet distances 1577
- Elliptical orbits 1609
- Milky Way 1609
- Moon mountains 1609
- Jupiter's four moons 1610
- Venus phases 1610
- Sunspots 1610
- Andromeda Nebula 1612
- Even better planetary tables 1627
- Double star 1650
- Moon features named 1651
- Saturn's ring 1656
- Syrtis Major 1659
- Jupiter's Red Spot 1664
- Planetary rotation 1665
- Saturn's four moons 1671
- Mars distance 1672
- Saturn's multiple rings 1675
- Southern stars 1678
- Earth size accurate 1684
- Comets' Orbits 1705
- Solar eclipse 1715
- Stellar motion 1718
- Formation of the Earth 1749
- Galaxy 1755
- Halley's comet 1758
- Venus’s atmosphere 1761
- Uranus 1781
- Binary stars 1781
- Axial inclination of mars 1781
- Eclipsing variables 1782
- Motion of the Sun 1783
- Martian ice caps 1784
- Clusters and nebulas 1785
- Galaxy observed 1785
- Uranus satellites 1789
- Meteorites Hypothesis 1794
- Nebular hypothesis 1796
- Perturbations 1799
- Discovery of Ceres 1801
- Asteroids 1802
- Meteorites 1803
- Encke's comet 1818
- Distance of the Sun 1824
- Photography of the moon 1839
- Sunspot cycle 1843
- Companion of Sirius 1844
- Astraea 1845
- Spiral nebulas 1845
- Neptune 1846
- Vulcan 1846
- Crab Nebula 1848
- Roche limit 1849
- Ariel and umbriel 1851
- Sunspots and earth 1852
- Age of the sun 1853
- Saturn's rings composition 1857
- Solar flares 1859
- Solar prominences 1860
- Dim companion of sirius 1862
- Constitution of the stars 1863
- Nature of Orion Nebula 1864
- Kirkwood gaps 1866
- Composition of a nova 1866
- Helium 1868
- Stellar photography 1872
- Martian canals 1877
- Martian moons 1877
- Origin of the moon 1879
- Nebular photography 1880
- Spectroscopic binaries 1889
- Mercury's rotation 1889
- Spectroheliograph 1890
- Asteroid photography 1891
- Amalthea 1892
- Large refracting telescope 1897
- Phoebe 1898
- Eros 1898
- Space flight 1903
- Star streams 1904
- Jupiter’s outer satellites 1904
- Color and stellar luminosity 1905
- Planetesimal hypothesis 1905
- Trojan asteroids 1906
- Sunspots and magnetism 1908
- Cepheid variables 1912
- Nebular velocities 1912
- Magellanic cloud distances 1913
- Main sequence 1914
- White dwarfs 1914
- Jupiter IX 1914
- Black holes 1916
- Expanding universe theory 1917
- 100-inch telescope 1917
- Center of the galaxy 1918
- Spectral classes 1918
- Stellar diameter 1920
- Novas in andromeda 1920
- Hidalgo 1920
- Expanding universe model 1922
- Cepheids in andromeda 1923
- Galactic rotation 1926
- Cosmic egg 1927
- Receding galaxies 1929
- Solar composition 1929
- Pluto 1930
- Surface temperature of the moon 1930
- Coronagraph 1930
- Schmidt camera 1930
- Interstellar matter 1930
- Radio waves from space 1932
- Supernovas 1934
- Neutron Stars 1934
- Radio telescope 1937
- Neutron stars 1939
- Distance of the Sun revised 1941
- Seyfert galaxies 1943
- New nebular hypothesis 1944
- Radio waves from hydrogen 1944
- Microwave reflection from the moon 1946
- Crab nebula as radio source 1947
- Martian atmosphere 1947
- Miranda 1948
- Icarus 1949
- Nereid 1949
- Cometary structure 1949
- Cometary cloud 1950
- Pluto's diameter 1950
- Hydrogen radiation 1951
- Milky way structure 1951
- Jupiter XII 1951
- Exploding galaxies 1955
- Birth of stars 1955
- Jupiter's radio waves 1955
- Pluto's rotation 1955
- Temperature of venus 1956
- Sputnik 1957
- Jodrell Bank 1957
- Solar X rays 1958
- Moon probes 1959
- Shape of the earth from space 1959
- Solar wind 1959
- Weather satellites 1960
- Human beings in space 1961
- Microwave reflections from Venus 1961
- American in space 1962
- Venus probe 1962
- Rotation of venus 1962
- Quasars 1963
- Arecibo radio telescope 1963
- X-ray sources in space 1963
- Woman in space 1963
- Multiperson spaceflight 1964
- Martian craters 1965
- Rotation of mercury 1965
- Spacewalks 1965
- Space rendezvous 1965
- Commercial communications satellites 1965
- Venus lander 1965
- Moon at close quarters 1966
- Space docking 1966
- Pulsars 1967
- Venus's atmosphere 1967
- Space casualties 1967
- Rotating neutron stars 1968
- Circumnavigation of the moon 1968
- Human beings on the Moon 1969
- Cosmonaut transfer 1969
- Planetary soft landing 1970
- Apollo XIII 1970
- Mapping mars 1971
- Moon rocks 1971
- Space station 1971
- Jupiter probe 1973
- Skylab 1973
- Mapping of Mercury 1974
- Formation of the moon 1974
- Leda 1974
- Surface of Venus 1975
- Life on Mars 1976
- Pluto’s surface 1976
- Rings of Uranus 1977
- Chiron 1977
- Vela pulsar 1977
- Radar mapping of Venus 1978
- Charon 1978
- Jupiter's satellites 1979
- Saturnian system 1980
- Space shuttle 1981
- Neptune's rings 1982
- Millisecond pulsar 1982
- Extrasolar planets 1983
- Brown dwarfs 1984
- Pluto and Charon 1985
- Uranus probe 1986
- Halley's comet return 1986
- Magellanic supernova 1987
- Distant galaxies detection 1988
- Neptune and triton 1989
- Chiron Comet 1989
- Hubble space telescope 1990
- Volcanic venus 1991
- First asteroid photograph 1991
- Gamma ray bursts 1991
- Very long baseline array 1993
War
- Bows and arrows 20,000 BCE
- Bridle 1,500 BCE
- Saddle 700 BCE
- Catapult 400 BCE
- Wooden stirrups 100 BCE
- Metal stirrups 300
- Greek fire 673
- High-backed saddle 750
- Couched lance 780
- Crossbows 1050
- Gunpowder 1249
- Longbows 1298
- Pike 1300
- Cannons 1346
- Artillery 1439
- Arquebus 1450
- Standing army 1450
- Musket 1565
- Rifle 1710
- Revolvers 1835
- Needle gun 1841
- Ironclad warships 1862
- Machine guns 1862
- Maxim gun 1883
- Cordite 1889
- V-2 1944
- Nuclear fission bomb 1945
- Soviet fission bomb 1949
- Nuclear fusion bomb 1952