WARNING: Cranky Old Man rant coming up.
Lately I have been driving all my friends nutty with complaints about traffic congestion, road rage, price gouging and headlines like "91 year old veteran beat up in carjacking as bystanders look on". I realize those are just little hassles facing me personally, but one doesn't need to look far to see signs of a declining quality of life and serious environmental degradation. I believe what is at the very core of problems like green-house gas, pollution, crime, infectious disease, war, malnutrition, widespread famine and similar catastrophes is that there are simply too many people.
Human population seems to grow exponentially and advancing technology provides solutions for some of the problems of this overcrowding... or are we just trading one set of problems for another set of problems?
I don't know if the global threshold is 2 billion people or 102 billion people but when we can no longer thrive in harmony with the environment and the majority of the people are forced into miserable and suffering difficult lives with limited resources, then we have found that threshold.