HIST 122 Lecture Notes - Feedback, Ecological Footprint, Malignancy

10 views5 pages
Published on 17 Apr 2013
School
Queen's University
Department
History
Course
HIST 122
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
Unlock document

This preview shows pages 1-2 of the document.
Unlock all 5 pages and 3 million more documents.

Already have an account? Log in
The last 4 million years
After 1750: 28%
After 1900: 20%
20th 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
o Post 19th 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
Unlock document

This preview shows pages 1-2 of the document.
Unlock all 5 pages and 3 million more documents.

Already have an account? Log in

Document Summary

The introspective path thought and choice personally, and communally. The explosion: 1950 and hence: 1 billion in 1800s, 6 billion in 200s. Since 1975, population grew by 1 billion every 15 years. 1800-1930, population grew by 4 million = 130 years. Human biomass explosion: at the expense of ecosystems and species. Unprecedented pull on ecosystems: cant be maintained in the long-run. The meaning of human years: 2. 16 trillion years = all the life spans of every hominid in the past 4 million years. 20th century: 1/5 of the entire human years in 0. 00025 part of human history. Storing somatic energy: slavery, controlling people/livestock. Fluctuations: due to famine, natural disasters, etc. Limitations: human limit = 100 watts. Fossil fuel energy regime: post 19th century, dominant form, increase in energy. 1800: 10 million metric tons globally: mostly in gb. Earliest form used to pull water out of coal mines. Efficiency before 1800: 1, 99% of energy wasted.

Get OneClass Grade+

Unlimited access to all notes and study guides.

YearlyMost Popular
75% OFF
$9.98/m
Monthly
$39.98/m
Single doc
$39.98

or

You will be charged $119.76 upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.