This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike License . Your use of this material constitutes acceptance of that license and the conditions of use of materials on this site. Copyright 2006, The Johns Hopkins University and Jonathan M. Links. All rights reserved. Use of these materials permitted only in accordance with license rights granted. Materials provided “AS IS”; no representations or warranties provided. User assumes all responsibility for use, and all liability related thereto, and must independently review all materials for accuracy and efficacy. May contain materials owned by others. User is responsible for obtaining permissions for use from third parties as needed.
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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike License. Your use of this material constitutes acceptance of that license and the conditions of use of materials on this site.
Copyright 2006, The Johns Hopkins University and Jonathan M. Links. All rights reserved. Use of these materials permitted only in accordance with license rights granted. Materials provided “AS IS”; no representations or warranties provided. User assumes all responsibility for use, and all liability related thereto, and must independently review all materials for accuracy and efficacy. May contain materials owned by others. User is responsible for obtaining permissions for use from third parties as needed.
Man’s impact on the natural environment− Ecology and environmental engineering
The environment’s impact on man− Environmental health sciences
4
The “Environment” and Health
The natural environmentThe built environmentThe social environment
Human/Environment Impact Circle
Humans
Environment
6
Precepts
The physical environment, our habitat, is the most important determinant of human healthProtection of the environment and preservation of ecosystems are the most fundamental steps in preventing human illnessEnvironmental problems are global and long-termHuman belief systems are part of the problem
7
The Earth as a Fishbowl
Ecosystem
Natural ResourcesEnergy Resources
Environmental Services
Solarenergy Heat
8
Small Population and Little Technology
Small population and little technology—society has low impact on environment
ENVIRONMENT
Deplete Pollute
Traditional economics
SOCIETY
9
Our Expanding Numbers
World population growth through-out history and near-term future
2.5 Myrs ago
7000B.C.
4000B.C.
1000B.C.
A.D.2040
6 billion—1998
5 billion—1987
4 billion—1974
3 billion—1959
2 billion—1938
1 billion—1830
5
Billions of People4
3
7
2
1
10
9
8
6
A.D.1
10
Larger Population and Increased Technology
Larger population and increased technology—society has great impact on environment
