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Lecture

Lecture 1+2

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Department
International Development Studies
Course Code
IDSB02H3
Professor
Issac

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Environmental Sciencelec 1, lec 2 09/20/2010
Environmental science is a mixture of a lot of disciplines
Environmental science the science and/or study of the environment, human effects
on the environment, conversely how the environment effects humans
Environmentalist takes a necessarily biases towards the protection of the
environment (a protestor about environmental issues)
Environmental scientist take an unbiased view of circumstances, suppose to be as
objectable and open as possible
Ecological footprint a manner of quantifying the land area required for persons
from a specific place to maintain their current lifestyle
oIf they grow than thing can go worse because earth does not grow in SA
Hectare 100mx100m
Two viewpoints
oCornucopia: horn of plenty
Human ingenuity will see us through our environmental problems via
new technologies and the such
oCassandra: mythical princess of Troy who prophesized about dire future
scenarios
All is lost because of our impact on the environment
Solutions
oRecycling
oRenewable energy (i.e. solar and wind)
oBest management practices in natural resource extraction and agriculture
Lecture 2
Todays lecture
oThe scope of human population growth
oThe history of human population
oFundamentals of demography
www.notesolution.com
Environmental Sciencelec 1, lec 2 09/20/2010
oThe demographic transition
oFactors that affect population growth
oThe effect of population, affluence and technology on the environment
oThe current effects of disease in controlling population growth
Population is at the root of environmental problems
Earth has been around 5.4 billion years
Humans have been around for 4-7 million years ago
oBut they were human-like
Apes that somewhat walk up straight
oLucy oldest known hominid(human-like) fossil
Dated around just over 4 million yrs ago
Discovered in the late 60s
Doubling time
oThe number of years it takes, given a specific rate of increase, for a
number(such as population) to double

1979 china growth rate = 2.8%
Current global growth rate = 1.2%
Current Canada growth rate 0.9%
Ex. If population growth 2%/yr then double time is 35 yrs
If population growth 2%/month, then doubling time is 35
months
o1979 china restricted the number of children that a couple could have to one
oIn order to decline population must have negative pop growth rate
Doubling time for such a population wouldnt be possible
www.notesolution.com

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Description
Environmental Science lec 1, lec 2 09202010 Environmental science is a mixture of a lot of disciplines Environmental science the science andor study of the environment, human effects on the environment, conversely how the environment effects humans Environmentalist takes a necessarily biases towards the protection of the environment (a protestor about environmental issues) Environmental scientist take an unbiased view of circumstances, suppose to be as objectable and open as possible Ecological footprint a manner of quantifying the land area required for persons from a specific place to maintain their current lifestyle o If they grow than thing can go worse because earth does not grow in SA Hectare 100mx100m Two viewpoints o Cornucopia: horn of plenty Human ingenuity will see us through our environmental problems via new technologies and the such o Cassandra: mythical princess of Troy who prophesized about dire future scenarios All is lost because of our impact on the environment Solutions o Recycling o Renewable energy (i.e. solar and wind) o Best management practices in natural resource extraction and agriculture Lecture 2 Todays lecture o The scope of human population growth o The history of human population o Fundamentals of demography www.notesolution.com
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