1974 ⟶ World Population Reaches Four Billion

World population reaches four billion.
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Year
1804
1927
1959
1974
1987
2011

🌍 World Population Reaches One Billion

World population reaches 1 billion.⟶
World Population Reaches One Billion (1804)
DemographicsPopulation GrowthGlobal HistoryHumanitySocial TrendsMortality RatesIndustrial Revolution

🌍 World Population Reaches Two Billion

World population reaches two billion.⟶
World Population Reaches Two Billion (1927)
DemographicsPopulation GrowthGlobal HistoryIndustrial RevolutionPublic HealthMortality RatesHumanity

🌍 Global Population Hits Three Billion

World population reaches three billion.⟶
Global Population Hits Three Billion (1959)
DemographicsPopulation GrowthHumanityGlobal TrendsSocial ChangeMortality RatesDevelopment

🌎 World Population Reaches Four Billion

World population reaches four billion.⟶
World Population Reaches Four Billion (1974)
DemographicsPopulation GrowthOverpopulationResource ScarcityDeveloping WorldGlobal ImpactSustainability

🌎 World Population Reaches Five Billion

World population reaches five billion.⟶
World Population Reaches Five Billion (1987)
Population GrowthDemographicsGlobal TrendsSocial ChangeOverpopulationSustainabilityResource ManagementDeveloping World

🌍 World Population Reaches 7 Billion

World population reaches 7 billion.⟶
World Population Reaches 7 Billion (2011)
Population GrowthDemographicsOverpopulationSustainabilitySocial ChangeResource Management