EESA01 Lecture 1: Assignment 1

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Published on 15 Dec 2015
School
Course
Professor
ENVIRONMENTAL SCIENCE LEC 2
Dierent philosophies on out environmental future: Cornucopians Vs.
Cassandras
Cornucopia: horn of plenty
Human ingenuity will see us through our environmental problems via
new technologies and such.
Cassandra: mythical princess of Troy who prophesized about dire future
scenarios
All is lost because of our impact on the environment
Population and Environmental Consequences
Ecological footprint
Canada has 7.6 hai
Comprehension objective for today’s lecture
The scope of human population growth
The history of human population
Fundamentals of demography
The demographic transition
Factors that a+ect population growth
The e+ect of population, a-uence and technology on the environment
The current e+ects of disease in controlling population growth
IPAT(S) Model
1974: Paul Ehrlich and John Holdren
Total impact (I) on environment is a result of the interaction between
population (P), a-uence (A), technology (T), and sensitivity (S):
I=P x A x T x S
Impact is largely POLLUTION, RESOURCE DEPLETION, or both.
Richest countries usually have the most a-uence hence biggest impact.
Technology can make impact better or worse
Sensitivity refers to whether or not the environment is sensitive
Homo naledi
Major discovery in a South African cave within the past month.
Homo
naledi
(same genus as us!)
Not yet dated; date has major implications for thoughts on our evolution.
Carbon dating
Double Timing
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Document Summary

Different philosophies on out environmental future: cornucopians vs. Human ingenuity will see us through our environmental problems via new technologies and such. Cassandra: mythical princess of troy who prophesized about dire future scenarios. All is lost because of our impact on the environment. The effect of population, affluence and technology on the environment. The current effects of disease in controlling population growth. Total impact (i) on environment is a result of the interaction between population (p), affluence (a), technology (t), and sensitivity (s): Impact is largely pollution, resource depletion, or both. Richest countries usually have the most affluence hence biggest impact. Sensitivity refers to whether or not the environment is sensitive. Major discovery in a south african cave within the past month. Not yet dated; date has major implications for thoughts on our evolution. The number of years it takes, given a specific rate of increase, for a number (such as population) to double.

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