Lecture 12: World Population Growth, Population Movements, Immigration, and Refugee Policy
World Population Movement: 6 billion and Multiplying
- Every time the second hand on your watch ticks—and it ticks 60 times a minute, 3,600
times an hour, 86,400 times a day—3 babies are born into the world.
- That’s more than a quarter-million babies a day. That’s more than 100 million babies a
- That’s equal to adding another China to the world’s family in this decade alone—and
China already has as many people as Europe, North America, and South America
- United Nations demographic projections suggest a world population of between 7.5 and 8.3
billion people by 2025. Compare this to the current 6.5 billion people.
- ―Based on different assumptions about total fertility rate, the global population was projected to
stabilize by the end of the 21st century at anywhere between eight and 15 billion people, or at a
much higher level, according to the ‗worst case scenario‘.‖
- Global population is now increasing as much every year as it did in a whole century for most of
the thousand centuries we‘ve on earth
- Global population now increases as much every 3 days as it did in a whole century for most of the
thousand centuries we‘ve been on Earth
- The average individual in an American household uses up 45 to 85 tons of natural resources per
year—the equivalent of 300 shopping bags per week.
- Who wrote An Essay on the Principle of Population in 1798?
o Thomas Malthus
o Malthus suggested geometric population growth rates could be stemmed only by natural
causes (accidents and old age) and ―Misery: (war, pestilence, famine).
o He thought population would outgrow food supply by the 19th century. He was wrong.
o Malthus favoured moral restraint (including late marriage and sexual abstinence) as a
check on population growth. However, it is worth noting that Malthus proposed this only
for the working and poor classes. Thus, the lower social classes took a great deal of
responsibility for societal ills, according to his theory.
- 95% of the world‘s population growth will occur in developing countries
The Global Village
- If we could shrink Earth’s population to a village of precisely 100 people, with all the
existing human ratios remaining the same, it would look something like this:
- There would be:
o 57 Asians
o 21 Europeans
o 14 Americans
o (North, Central and South)
o 8 Africans
o 52 women and 48 men
o 30 Caucasians and 70 non-Caucasians