You can see new land being formed, right in front of your eyes. Why does this golf course hold the secret to the rise and fall of the Rockies?
HANDY is a 4-variable thought-experiment model for interaction of humans and nature.
Collapses have occurred frequently in history, often followed by centuries of economic, intellectual, and population decline. Many different natural and social phenomena have been invoked to explain specific collapses, but a general explanation remains elusive. In this paper, we build a human population dynamics model by adding accumulated wealth and economic inequality to a predator—prey model of humans and nature.
The model structure, and simulated scenarios that offer significant implications, are explained.
Four equations describe the evolution of Elites, Commoners, Nature, and Wealth. The model shows Economic Stratification or Ecological Strain can independently lead to collapse, in agreement with the historical record.
Mechanisms leading to two types of collapses are discussed. The new dynamics of this model can also reproduce the irreversible collapses found in history.
Collapse can be avoided, and population can reach a steady state at maximum carrying capacity if the rate of depletion of nature is reduced to a sustainable level and if resources are distributed equitably.Vital Signs of the Planet: Global Climate Change and Global Warming.
How do we know it’s happening? Here’s the evidence. Human society is altering the fragile balance of our planet without awareness of the consequences of the ever-changing climate.
Our current global society needs to move from an old paradigm of thoughtless human activities and lack of concern for global sustainability to a more literate and resilient society.
This is really good. But I also think there’s a reason our base cultural values are used as a tiebreaker – they’re designed to minimize the average actual distaste the average person has with the status quo (You can’t have a cultural norm if too many people object to it too strongly, it ends up changing).
Kurt Cobb is a freelance writer and communications consultant who writes frequently about energy and environment. His work has appeared in The Christian Science Monitor, Common Dreams, Le Monde Diplomatique, iridis-photo-restoration.com, OilVoice, TalkMarkets, iridis-photo-restoration.com, Business Insider .
Medical ethics, human rights and law. Circumcision is more than a medical or health issue. Bodily integrity is recognized as a fundamental human right, basic to the autonomy of the individual and guaranteed by law. iridis-photo-restoration.com Tue, 04 Sep + iridis-photo-restoration.com?p=41 Thomas.