The Lorax Studying Environmental Science The problem with
The Lorax & Studying Environmental Science The problem with biggering and biggering • From the beginning of human existence to ______ the human population never exceeded 1 billion • From __________ the human population went from 1 billion to 6 billion
Exponential human growth leads to exponential human activities and resource use. Exponential growth plays a role in 5 important and interconnected environmental issues: 1. __________ 2. resource use and waste 3. __________ 4. loss of biological diversity 5. __________
In 1798 Thomas Malthus, a British economist claimed that unless population growth was controlled by laws or other social structures, the number of people would outgrow the __________ until starvation, war, or disease arose and _____________. -An Essay on the Principle of Pope
In 1968, Paul Ehrlich, of Stanford University also argued that population was growing much faster than our __________ and _________, and maintained that _________ was the only way to prevent massive starvation and civil strife. -The Population Bomb
Living with the Once-lers • Who are the Once-lers in our world • About ______ of the world’s population lives in the 20 richest countries where the average per capita income is about $25, 000 (US) [Developed countries – about _______ people] • The other ______ live in countries where the per capita income is much less. More than _____ live in countries where the per capita income is below $620 (US) [Developing countries – about ______ people]
Percent of the World’s Developed Developing 19 Population growth Wealth and income Resource use Pollution and waste 81 0. 1 1. 6 85 15 88 12 75 25
Sometimes I think progress is progressing too fast! economic development Good News Bad News -Global life expectancy _______ since 1950 -Life expectancy 11 years less in ______ countries than in ______ countries -Infant mortality cut ______ since 1955 -Infant mortality rate in _____ countries over 8 times higher than in _____ countries
economic development Bad News Good News -Food production ____ of population growth since 1978 -Air and water pollution ____ in most developed countries since 1970 -Number of people living in poverty dropped _______ since 1990 -Harmful environmental effects of _____ may limit future food production -Air and water pollution levels in most developing countries _____ -Half of world’s people trying to live on _______ (US) per day
“See, there’s no harm done, I’ve taken just one. ” • Consumption is the _______ of materials and energy • A resource is anything obtained from the environment to meet our __________ • Remember ______ countries use 82% of the resources
According to the Worldwatch Institute, highly developed nations consume: ___% ___% of of of the the the aluminum used timber harvested energy produced meat eaten fresh water consumed
The US with 4. 4% of the world’s population: Consumes ___% of all oil 20% of copper ___% of steel ___% of aluminum 19% of nickel Produces 50% of all toxic waste ___% of nitrogen oxides 25% of sulfur dioxide ___% of chlorofluorocarbons 26% of carbon dioxide
“one word – Unless” • Environmental Sustainability – When the environment is used _______, humanity’s present needs are met without endangering the welfare of future generations. • Environmental sustainability is dependent on 3 factors: 1. environmentally sound decisions 2. _______________ 3. socially equitable decisions
- Slides: 12