Time Line
End of Ice Age
AD 0
1650 (double 1)
1850 (double 2)
1940 (double 3)
1975 (double 4)
Oct. 12, 1999
2025 (est.)
2050 (est.)
10 million (nomads)
250 million (agriculture)
500 million (health care?)
1 billion
2 billion
4 billion
6 billion (6.7 billion 9/2008)
7.8 billion
9.3 billion (US = 420 million)
a. 95% of the world’s population growth occurs in less developed countries
b. 80% of the world’s population is less developed countries
c. 177 people born per minute (10,645 per hour)
Population Time Line
10
Population in Billions
9
8
7
6
5
4
3
2
1
0
0
500
1000
1500
Year
2000
2500
Population Cartogram
US Population Trends
1. 1915 – 100 million
2. 1967 – 200 million (91 years to double)
3. 2006 – 300 million (39 years, 50% increase)
4. 2050 – 420 million
5. 2030 – 20% will be 65-and-over (12% in 2000)
6. 2050 – 25% will be Hispanic Americans; non-Hispanic whites
will drop to 50%
7. Since 1970, 84% of US growth has occurred in the South and
West
a. Dallas increased 444 people per day!
b. St. George was #2 by percentage – 5%
Impacts/Effects of Population Growth
1.
2.
3.
4.
5.
Environmental degradation-global warming?
Economic issues-jobs for all?
Hunger/malnutrition
Future growth
Average children per family- U.S. = 1.2; Africa
= 6.1
World’s Largest Countries
1. China (1.33 B) -- 20% of world’s total pop.
2. India (1.1 B)
3. U.S.A. (303 M)
4. Indonesia (237 M)
5. Brazil (184 M)
6. Russia (140 M)(World’s largest in size)
Population Pyramids
1. A population pyramid can be used to understand reasons
for population growth,
2. Such a diagram shows the age-sex structure of a country.
3. Countries with a slower growth rate will have a "straighter"
population pyramid.
4. If the population pyramid has a more "pyramid like" shape,
with a broader base and a narrow summit, the population
of the country will continue to increase.
Population Pyramids
Demographic Transition
1. STAGE 1: both high birth and high death rates.
2. STAGE 2: high birth rates and low death rates.
Very poor countries such as Africa and Asia, can
be found in this category.
3. STAGE 3: high birth and death rates, but the birth
rates are beginning to decrease.
4. STAGE 4: low birth and low death rates.
5. Undeveloped countries are generally found in
stages two and three and the more developed
nations are in stage four.
Demographic Transition
Urban vs. Rural
1.
2.
3.
4.
5.
6.
1950 - 30% Urban
2007 - 50% Urban
2030 - 60% ???
95% of wetlands in CA are at risk due to urban
growth.
Loss of farm land due to encroachment of cities
Colorado river doesn’t even make it to the sea
due to irrigation, etc.
Percent Urban, 2007, 2015, and 2030
1.
2.
3.
4.
5.
World’s Largest Cities
Tokyo (34.4 Mil)
6. Calcutta
Mexico City (18 Mil)
7. Shanghai
New York (17.8)
8. Buenos Aires
Sao Paolo (17 Mil)
9. Delhi (18% growth!)
Mumbai (Bombay) (16 10. Los Angeles
Mil)
Density
a. Bombay- 127,000/ Sq-Mi
b. Jakarta- 130,000/ Sq-Mi
c. Lagos- 142,000/ Sq.Mi
d. NYC- 12,000/ Sq.Mi
e. LA- 9120/ Sq.Mi
f. Park City- est. 850/Sq.Mi
Lagos, Nigeria
Jakarta, Indonesia
PCI (Per Capita Income)
1.
2.
3.
4.
5.
6.
Luxembourg - $78,559
Norway - $58,141
Singapore - $49,288
USA - $46,716
Ireland - $44,195
Canada - $36,444 (12th)
a. Somalia - $600
b. Congo - $321
c. Afghanistan - $1,000
d. Iraq - $3,600
e. North Korea - $1,900
f. Mexico - $12,800
g. World - $10,415
h. Cuba - $4,500
i. China - $5,300
Religion Total
1. Christianity (Catholicism) (2.1 Billion)
2. Islam (1.3 B)
3. Hindu (875 Mil)
4. Chinese Folk (385 Mil)
5. Buddhism (385 Mil)
6. Non-Religious (776 Mil)
Language
1. Mandarin (1.2 Bil)
2. Hindi/Bengali (375 Mil)
3. Spanish (329 Mil)
4. English (328 Mil)
5. Arabic (221 Mil)
*50 Languages alone in Europe (with over 100 dialects)