1. Question!
What are the key themes of environmental science according to chapter 01 in Botkin & Keller?

2. Major Themes of Environmental Science
________________________

3. Part 1 Key Themes in Environmental Sciences
Botkin & Keller Chapter 1, Cartoon Guide chapter 1

4. Human Population Growth
The human population grew at a rate unprecedented in history in the twentieth century.
Population growth is the underlying environmental problem.
Famine is one of the things that happen when a population exceeds its environmental resources. An example is African Famine.
Another example is disease.
Can you think of the example in the book?

5. Human Population Growth Global

6. Human Population Growth by Region
Population change since 1950 projected to the year 2150 for major areas of the world, medium fertility scenario. The population of Africa will nearly quadruple. The only major area whose population is projected to drop over time is Europe – from 728 million to 595 million, a decline of 18% over 155 years.
© 2008 John Wiley and Sons Publishers

7. An Urban World
When the impact of technology is combined with the impact of population, the impact on the environment is multiplied.
In an increasingly urban world, we must focus much of our attention on the environments of cities and on the effects of cities on the rest of the environment.

8. Sustainability and Carrying Capacity
What is the maximum number of people the Earth can sustain?
What does it mean to be sustainable?

9. Sustainability Two ways to define
Sustainable _________ harvest
An amount of a resource that can be harvested at regular intervals indefinitely
Sustainable _________ An ecosystem that is subject to some human use, but at a level that leads to no loss of species or of necessary ecosystem functions
What could they have done on Easter Island to make their way of life sustainable?

10. A Global Perspective
If there is enough food produced globally why do people still starve?
How do the actions of people some regions of the world influence people all over the world?

11. Science and Values
To make decisions about an environmental problem we:
Know what is possible based on science
Choose the best option based on our values

12. Placing a Value on the Environment
Utilitarian Justification
Ecological Justification
Aesthetic Justification
Moral Justification
Cultural Justification
Which did you select on your bellwork?

13. Precautionary Principle
Precautionary Principle states that we should not wait for scientific proof before taking action to prevent environmental damage.
Ex. San Francisco