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Homo Sapiens existance: 106 years (1013 s)
Modern human spread: 105 x ~0.4 years ago
World human pop c10,000 YA: 107
Human Population Estimates [Cow, p263]
| year | world pop (×109) | US pop (×109) |
| 1650 | 0.5 | |
| 1850 | 1.1 | 0.023 |
| 1900 | 1.6 | 0.076 |
| 1910 | 1.7 | 0.092 |
| 1930 | 2.0 | 0.123 |
| 1950 | 2.5 | 0.152 |
| 1960 | 3.0 | 0.181 |
| 1970 | 3.6 | 0.205 |
| 1980 | 4.5 | 0.227 |
| 1983 | 4.7 | 0.234 |
And these two tables should be taken with an extra-large dose of salt, as Timescape (1983) is getting rather old. I include them so you can do rough (say factor of 2) calculation.
Population Estimates - 2000 YR to present (millions) [Timescale, p267]
| yr before AD 2000 | 2000 | 1000 | 500 | 250 | 100 | 30 |
| AD | 1 | 1000 | 1500 | 1750 | 1900 | 1970 |
| World | 295 | 325 | 515 | 770 | 1680 | 3650 |
| China | 80 | 65 | 125 | 207 | 425 | 800 |
| India | 75 | 75 | 112 | 180 | 180 | 627 |
| southwestern Asia | 35 | 25 | 25 | 30 | 42 | 110 |
| Japan | 1 | 5 | 17 | 29 | 44 | 103 |
| rest of Asia | 14 | 17 | 22 | 45 | 217 | 422 |
| USSR area | 7 | 10 | 14 | 35 | 132 | 243 |
| Europe | 35 | 35 | 65 | 127 | 297 | 422 |
| northern Africa | 12 | 7 | 9 | 12 | 54 | 72 |
| rest of Africa | 22 | 30 | 45 | 65 | 105 | 280 |
| North America | 1 | 2 | 2 | 2 | 82 | 228 |
| rest of America | 10 | 50 | 60 | 15 | 74 | 287 |
| Oceania | 1 | 1 | 1 | 2 | 6 | 19 |
Population: Summary Timetable [Timescale, p269]
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population growing: c. 9500 yr. From ?8 million to peak, [...] level or falling populations: c. 2000 yr. In the Old World, associated with the increase in disease, and poorly defined crashes, esp. after 1838 yr (AD 162, Eurasian epidemics); populations were still rising in the Americas. population surge: c. 1000 yr (AD 1000). In China and Europe. population crash: c. 790 yr (AD 1290). Dated by Chinese census, probably typical of Eurasia. population recovery: c. 650 yr (AD 1450). Dated for the estimate for China, again perhaps typical of Eurasia. Amerindian epidemics (population crash): 479 yr (AD 1521). A direct consequence of the breakout of the European navigators and their diseases. [...?] population boom: c. 300 yr (AD 1700). First in China (interrupted 1850, resumed 1950); in Europe from c. AD 1800. global population boom: c. AD 1930 population inflection: c. AD 1970. The rate of growth abating in the world as a whole (c. 1900 in Europe). |
2%/yr turnover
Comments encouraged. - Mitchell N Charity <mcharity@lcs.mit.edu> |