2018-2019 apes_ch_1.ppt - Environmental Science: Earth as a...

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Environmental Science:Earth as a Living PlanetEnvironmental Science:Earth as a Living PlanetChapter 1Chapter 1
Major Themes ofEnvironmental ScienceMajor Themes ofEnvironmental ScienceWorld PopulationIn A.D. 1- 100 Million peopleIn 1960- 3 Billion peopleToday- 6.7 Billion peopleProjected: 10 Billion by 2040It took human population almost2000 years to get to 3 billion,only 40+ years to add 3 billionmoreWorld PopulationIn A.D. 1- 100 Million peopleIn 1960- 3 Billion peopleToday- 6.7 Billion peopleProjected: 10 Billion by 2040It took human population almost2000 years to get to 3 billion,only 40+ years to add 3 billionmore
Problem?Problem?The Earth has not grown any largerand the abundance of its resourceshas not increasedCan the EarthSUSTAINall thesepeople?What is the maximum number ofpeople that Earth can support?(remember: Easter Island)The Earth has not grown any largerand the abundance of its resourceshas not increasedCan the EarthSUSTAINall thesepeople?What is the maximum number ofpeople that Earth can support?(remember: Easter Island)
World PopulationWorld PopulationHow many people the Earth cansustain depends onscience andvaluesand is also a question aboutpeople and nature.What quality of lifeare peoplewilling to accept?Thepoorer that quality, the greaterthe number of peoplethat can besqueezedonto the Earth’ssurfaceHow many people the Earth cansustain depends onscience andvaluesand is also a question aboutpeople and nature.What quality of lifeare peoplewilling to accept?Thepoorer that quality, the greaterthe number of peoplethat can besqueezedonto the Earth’ssurface
Human PopulationGrowthHuman PopulationGrowthJohn Eli Miller FamilyOf 7 children born to John Miller, 5survived himOf 63 grandchildren, 61 survived himOf the 341 great-grandchildren (bornto 55 married grandchildren- anaverage of slightly more than 6children per parent- 338 survived him)John Eli Miller FamilyOf 7 children born to John Miller, 5survived himOf 63 grandchildren, 61 survived himOf the 341 great-grandchildren (bornto 55 married grandchildren- anaverage of slightly more than 6children per parent- 338 survived him)
John Eli Miller FamilyJohn Eli Miller Family
Modern PopulationExplosionModern PopulationExplosionMajor factors in population:Supply of FoodSupply of ClothingShelterDecreased death rates (medicalimprovement)As a result, the human population hasincreased greatly, threatening theenvironmentMajor factors in population:Supply of FoodSupply of ClothingShelterDecreased death rates (medicalimprovement)As a result, the human population hasincreased greatly, threatening theenvironment
World PopulationWorld Population
Consequences of RapidPopulation GrowthConsequences of RapidPopulation GrowthFAMINEis one of the things thathappen when a human populationexceeds its environmental resourcesIn 1970’s, following a drought inthe Sahel Region, 500,000 Africansstarved to death and several millionmore were permanently affected bymalnutritionFAMINEis one of the things thathappen when a human populationexceeds its environmental resourcesIn 1970’s, following a drought inthe Sahel Region, 500,000 Africansstarved to death and several millionmore were permanently affected bymalnutrition

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