The world population has grown from 200 million in 0 AD to 6 billion in 1999 and is estimated to reach 9 billion by 2050. The population increased by 1 billion every 12 years in the post-war era. By 2027, the urbanized population is projected to increase by 750 million new city dwellers, adding around 1.2 million new urban residents per week. At this rate of growth, most countries will see the equivalent of a new city the size of Milan added every 12 years. This uncontrolled urbanization risks creating an "urban meltdown" as natural and built-up areas expand rapidly.

1. MM: Evolution
of world population
0 AD 200 million
1000 AD 265 million
1804 1 billion
1999 6 billion
2050 (estimate) 9 billion
conrad-bercahDörfer-Großstadt 1/5

2. The 1 billion
units increase
Post war rule:
1 billion every 12 years
year population urbanized pooor
1960 3 billion — —
1974 4 billion — —
1987 5 billion 1.0 billion 100 million
1999 6 billion 2.0 billion 500 million
2011 7 billion 3.5 billion 1 billion
conrad-bercahDörfer-Großstadt 2/5MM: Evolution of world population

3. 12 years = 624 weeks
MMM Math
1,000,000,000 persons
624 weeks
= 1.6 million every week

4. 2015: projected increase of urbanized population
in the next 12 years = 750,000,000 new ‘citizens’
MMM Urban Math
750,000,000 citizens
624 weeks
= 1.2 million every week

5. Number of states with land mass of 10,000 square km or more = 165
750,000,000 people
165 countries
= 1 new Milan per country every 12 years
MMM Urban Problem
Lebanon land mass = 10,000 square km
Milan urbanized area = 4.5 million people

6. The MMM has begun.
Two man-made crusts cover the natural crust of the earth.
The road is paved for the Urban Meltdown.
MMM Three Crusts

7. EARTH: the first crust of the earth
conrad-bercahDörfer-Großstadt MM: Evolution of world population

8. CONCRETE: the first crust of the earth
conrad-bercahDörfer-Großstadt MM: Evolution of world population

9. WILD URBANIZATION: the third crust of the earth
conrad-bercahDörfer-Großstadt MM: Evolution of world population