10:28
Calhoun Mouse Experiment : Population Collapse
07:57
Depopulation Apocalypse : The Coming Population Collapse
13:01
Sub Replacement Fertility : The Low Birth Rate Apocalypse: The Coming Population Collapse
15:15
Collapse of Civilizations Fermi Paradox
02:04:42
Collapse of Civilizations Fermi Paradox
21:52
Depopulation in Ancient Greece and Rome by Polybius and Emperor Augustus Sub Replacement Fertility
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