The World3 model is a detailed simulation of human population growth from 1900 into the future. It includes many environmental and demographic factors.
Use the sliders to experiment with the initial amount of non-renewable resources to see how these affect the simulation. Does increasing the amount of non-renewable resources (which could occur through the development of better exploration technologies) improve our future? Also, experiment with the start date of a more environmentally focused policy.
"The World3 model is a system dynamics model for computer simulation of interactions between population, industrial growth, food production and limits in the ecosystems of the earth.
It was originally produced and used by a Club of Rome study that produced the model and the book The Limits to Growth (1972).
The creators of the model were Dennis Meadows, project manager, and a team of 16 researchers
The main systems are: the food system, dealing with agriculture and food production, the industrial system, the population system, the non-renewable resources system, the pollution system.
Scenario is below
Scenario2: Initial Natural Resource 1T -> 2T
Scenario3: Scenario2 + Persistent Pollution Tech Change Multiplier (-1,0)->(-1, -0.04)
Scenario4: Scenario3 + Yield Tech Change Multiplier (-1,0) -> (-1,0.04)
Scenario5: Scenario4 + Land life time 2100 -> 2002
Scenario6: Scenario5 + Resource Technology Change Multiplier (-1, 0) -> (-1, -0.04)
Scenario7: Scenario2 + Year of continued fertility change 2100 -> 2002, Time to zero population growth 2100 -> 2002
Scenario8: Scenario7 + Desired annual industrial per capita output 400 -> 350, Year of Industrial Equilibrium 2100 -> 2002
Scenario9: Scenario8 + scenario6
Scenario10: Scenario9 + Policy adoption year 2002 -> 1982
Editor Original Snenario: Scenario4 + Land life time 2100 -> 2030 + Resource Technology Change Multiplier (-1, 0) -> (-1, -0.04) + Year of continued fertility change 2100 -> 2030, Time to zero population growth 2100 -> 2030 + Desired annual industrial per capita output 400 -> 350, Year of Industrial Equilibrium 2100 -> 2030 + Policy adoption year 2002 -> 2030.
This description is from https://en.wikipedia.org/wiki/World3
Model adapted from the implementation presented in Cellier, F.E. (2008), https://people.inf.ethz.ch/fcellier/Pubs/World/modelica_08_world3.pdf"
World3 in Modelica: Creating System Dynamics Models in the Modelica Framework, Proc. 6th International Modelica Conference, Bielefeld, Germany, Vol.2, pp. 393-400.
