A simplified Science Olympiad trial model for comparing lake-restoration strategies. Adjust wastewater treatment, water-hyacinth removal, and wetland-buffer effort, then run the simulation to compare pollution load, pathogen risk, and hyacinth coverage over time. Values are normalized challenge indices, not field measurements or a real-world safety forecast.

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 low birth-rate, environmentally focused policy.

Key Pathways Tested:

1. Culture & Self--> Goals: Goal Orientation is calculated as a weighted composite where Alignment between culture and self determines whether goals are internally or externally generated.
   

2. Culture→Self: Cultural values influence self-construal (make it more similar to the cultural context) over developmental time (tmacro​=18).  

   3. Goals→Self: Feedback from goal pursuit reshapes self-construal, with the strength of influence being moderated by alignment between self-construal and subjective culture.

Removed the XXX influx and replaced it with volcanic islands + basalt derived Sr with low radiogenic and stable Sr isotopic composition. Added also CaCO3 dissolution from sediments and below lysocline

Developed by Maurice Karsten (Bielefeld University) as part of a doctoral research in chemistry education.