1. J-Curve
Why might the population be increasing so rapidly now as compared to before?

2. MALTHUS & Essay on population (1798)
“The power of population is indefinitely greater than the power in the earth to produce subsistence for man...”

4. MALTHUS & Essay on population (1798)
Food = Linear
Population = Exponential/”Geometric”
People
Food
Now 1
25 yrs 2
50 yrs 4 3
75 yrs ?
100 yrs

5. Calculating Doubling Time
Years to double = 70 / growth rate as a %
Nigeria: 2.5% Years to double? USA: 0.4% Years to double? Niger: 18 years to double Growth rate? Mexico: 50 years to double Growth rate?
Nigeria: 28
USA: 175
Niger: 3.8%
Mexico: 1.4%

6. In the last 200 years the population of our planet has grown exponentially, at a rate of 1.9% per year. If it continued at this rate, with the population doubling every ___ years, by 2600 we would all be standing literally shoulder to shoulder.  -- Professor Stephen Hawking
FORTY!!!!!!!!!!!

7. Solution? Raise the CDR? Exercise “Moral Restraint” Reduce CBR!
Will saving poor children lead to overpopulation?

9. Is Malthus Right? Will we reach a point of crisis? Why / why not?

10. How high will the population be when we stabilize?

11. Now, world growth rate is 1.096% (vs. 1.9%)
S-Curve
Now, world growth rate is 1.096% (vs. 1.9%)

12. Realities Food production has increased faster than growth rate
Better seeds and technology = higher yields
Famine: problems of access, rather than lack of food