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Hist 122 Semester 2, Week 11.docx

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Department
History
Course
HIST 122
Professor
Amitava Chowdhury
Semester
Winter

Description
Semester 2, Week 11 Hist 122 Sustainability and Global Future Environmental Legacy of Industrial Rev (IR)  Reliance on fossil fuels  Accelerated depletion  Deep pollution o Changing molecular structures Technology and the Path Ahead  The Complacent path OR  Radical return  rejection of IR OR  The introspective path  thought and choice personally, and communally I. History of Human Population Explosion A Crowded Place  The explosion: 1950 and hence o 1 billion in 1800s o 6 billion in 200s Let’s get scared  Since 1975, population grew by 1 billion every 15 years  1800-1930, population grew by 4 million = 130 years Why?  Technology and food production  Agricultural engineering  Improvement in medicine  Sanitation What does this mean?  300,000 new individuals born every day  Human biomass explosion o At the expense of ecosystems and species  Unprecedented pull on ecosystems o Cant be maintained in the long-run  Agents of mass extinction Human Years  The meaning of human years o 2.16 trillion years = all the life spans of every hominid in the past 4 million years  The last 4 million years  After 1750: 28%  After 1900: 20% th  20 century: 1/5 of the entire human years in 0.00025 part of human history  After 1950: 13% II. Energy Consumption Somatic Energy Regime  Bodily/muscular energy  Human/animal energy  Storing somatic energy o Slavery o Controlling people/livestock  Fluctuations o Due to famine, natural disasters, etc.  Limitations o Human limit = 100 watts  Fossil fuel energy regime th o Post 19 century o Dominant form o Increase in energy Coal Consumption  1800: 10 million metric tons globally o Mostly in GB  1900: 1000 million metric tons globally  1990: 5000 million  Deep costs to the environment Steam Engine  Earliest form used to pull water out of coal mines  Efficiency before 1800 o 1% o 99% of energy wasted  Capacity in 1800 o 5% efficient  Capacity in 1900 o 30% efficient  Feedback loop and coal consumption Oil Consumption Internal Combustion Engine  Advantages o Smaller, lighter  automobiles o More efficient  Replacement of biomass fuel o Wood, cow dung  Global disparity and inequality o Due to access of availability o Increasing divergence  1800:0 consumption  1900: 20 million metric tons  1990: 3000 million metric tons Total Energy  1800: 400 million metric tons (in weight)  1900: 1900 million metric tons  1990: 30,000 million metric tons  The prodigal centur
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