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In this section
1. Evolution
2. Impacts
3. Revolutions
4. Resources
5. Sustainability
Summary
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Perspectives
Contacts
Our Environment
Contents
Contents
Evolution
Aims
The early Earth
The origins of life
The earliest evidence of life
An Oxygen Revolution and the evolution of more complex organisms
Prokaryotes, eukaryotes, and DNA
Endosymbiosis and the evolution of eukaryotes from prokaryotes
The origins of multi-cellular life
Interruption of the evolution of multi-cellular life by major glaciations
Shifting continents and evolution
Skeletal life forms
The end of the dinosaurs - the K-Pg boundary
Human evolution
Tool-using hominids
Impacts
Aims
U
se of fire
Water resource development
Forest clearance
Fossil fuel burning
Urbanisation
The 'anthropocene'
Leibig's Law of the Minimum
Carrying capacity and technological development
Trade
The emergence of environmental limitations of a new kind
Complex interrelationships between human activities and biological, chemical and geophysical processes
The implications of human activities for the global environment
Dimensions of the study and management of environmental issues
Revolutions
Aims
Four major defining transitions (revolutions)
The Paleolithic era
The Neolithic revolution
The industrial revolution
Environmental impacts of the industrial revolution
The environmental revolution
Changes in the relationship between people and their environments with successive revolutions
The emergence of a new environmentalism
Resources
Aims
Definition of an environmental resource
Resources as manageable environmental attributes
Resource exploitation involving nature, technology, economy and society
Feasibility hurdles for resource exploitation
Renewable resources
Non-renewable resources
Threats to sustainability from depletion of non-renewable resources
Environmental resources as economic assets
Weak and strong sustainability
The principle of weak sustainability
The principle of strong sustainability
Safeguarding the interests of future generations
Sustainability
Aims
Environmental sustainability and a new paradigm for development
Bruntland principles of sustainable development
Sustainable development and consistency between environmental protection and economic growth
Sustainable environmental development and resource exploitation
Social ownership of sustainable development
A vision of sustainable development
Multi-level commitment to environmentally sustainable development
Commitment at international level
Commitment at national level
Commitment at regional level
Commitment at business level
Commitment at community level