The Limits to Growth (LTG) is a 1972 report that discussed the possibility of exponential economic and population growth with finite supply of resources, studied by computer simulation. The study used the World3 computer model to simulate the consequence of interactions between the earth and human systems. The model was based on the work of Jay Forrester of MIT, as described in his book World Dynamics.
Environmental geology, like hydrogeology, is an applied science concerned with the practical application of the principles of geology in the solving of environmental problems created by man. It is a multidisciplinary field that is closely related to engineering geology and, to a lesser extent, to environmental geography. Each of these fields involves the study of the interaction of humans with the geologic environment, including the biosphere, the lithosphere, the hydrosphere, and to some extent the atmosphere. In other words, environmental geology is the application of geological information to solve conflicts, minimizing possible adverse environmental degradation, or maximizing possible advantageous conditions resulting from the use of natural and modified environment. With an increasing world population and industrialization, the natural environment and resources are under high strain which puts them at the forefront of world issues. Environmental geology is on the rise with these issues as solutions are found by utilizing it.
System dynamics (SD) is an approach to understanding the nonlinear behaviour of complex systems over time using stocks, flows, internal feedback loops, table functions and time delays.
Exponential growth is a process that increases quantity over time. It occurs when the instantaneous rate of change of a quantity with respect to time is proportional to the quantity itself. Described as a function, a quantity undergoing exponential growth is an exponential function of time, that is, the variable representing time is the exponent.
Donella Hager "Dana" Meadows was an American environmental scientist, educator, and writer. She is best known as lead author of the books The Limits to Growth and Thinking In Systems: A Primer.
The twelve leverage points to intervene in a system were proposed by Donella Meadows, a scientist and system analyst who studied environmental limits to economic growth.
Beyond the Limits is a 1992 book continuing the modeling of the consequences of a rapidly growing global population that was started in the 1972 report Limits to Growth. Donella Meadows, Dennis Meadows, and Jørgen Randers are the authors and all were involved in the original Club of Rome study as well. Beyond the Limits and Earthscan addressed many of the criticisms of the Limits to Growth book, but still has caused controversy and mixed reactions.
The Club of Rome is a nonprofit, informal organization of intellectuals and business leaders whose goal is a critical discussion of pressing global issues. The Club of Rome was founded in 1968 at Accademia dei Lincei in Rome, Italy. It consists of one hundred full members selected from current and former heads of state and government, UN administrators, high-level politicians and government officials, diplomats, scientists, economists, and business leaders from around the globe. It stimulated considerable public attention in 1972 with the first report to the Club of Rome, The Limits to Growth. Since 1 July 2008, the organization has been based in Winterthur, Switzerland.
Jay Wright Forrester was a pioneering American computer engineer and systems scientist. He is credited with being one of the inventors of magnetic core memory, the predominant form of random-access computer memory during the most explosive years of digital computer development. It was part of a family of related technologies which bridged the gap between vacuum tubes and semiconductors by exploiting the magnetic properties of materials to perform switching and amplification.
The World3 nonrenewable resource sector is the portion of the World3 model that simulates nonrenewable resources. The World3 model is a simulation of human interaction with the environment that was designed in the 1970s to predict population and living standards over the next 100 years. The nonrenewable resource sector of the World3 model was used to calculate the cost and usage rates of nonrenewable resources. In the context of this model, nonrenewable resources are resources that there are a finite amount of on Earth, such as iron ore, oil, or coal. This model assumes that regardless of how much money is spent on extraction, there is a finite limit for the amount of nonrenewable resources that can be extracted.
Dennis Lynn Meadows is an American scientist and Emeritus Professor of Systems Management, and former director of the Institute for Policy and Social Science Research at the University of New Hampshire. He is President of the Laboratory for Interactive Learning and widely known as a coauthor of The Limits to Growth.
Degrowth is a term used for both a political, economic, and social movement as well as a set of theories that critique the paradigm of economic growth. It can be described as an extensive framework that is based on critiques of the growth-centered economic system in which we are living. Degrowth is based on ideas from a diverse range of lines of thought such as political ecology, ecological economics, feminist political ecology, and environmental justice, pointing out the social and ecological harm caused by the pursuit of infinite growth and Western "development" imperatives.
Jørgen Randers is a Norwegian academic, professor emeritus of climate strategy at the BI Norwegian Business School, and practitioner in the field of future studies. His professional field encompasses model-based futures studies, scenario analysis, system dynamics, sustainability, climate, energy and ecological economics. He is also a full member of the Club of Rome, a company director, member of various not-for-profit boards, business consultant on global sustainability matters and author. His publications include the seminal work The Limits to Growth (co-author), and Reinventing Prosperity.
In environmental science, the concept of overshoot means demand in excess of regeneration. It can apply to animal populations and people. Environmental science studies to what extent human populations through their resource consumption have risen above the sustainable use of resources. For people, "overshoot" is that portion of their demand or ecological footprint which must be eliminated to be sustainable. Excessive demand leading to overshoot is driven by both consumption and population.
The history of environmental pollution traces human-dominated ecological systems from the earliest civilizations to the present day. This history is characterized by the increased regional success of a particular society, followed by crises that were either resolved, producing sustainability, or not, leading to decline. In early human history, the use of fire and desire for specific foods may have altered the natural composition of plant and animal communities. Between 8,000 and 12,000 years ago, agrarian communities emerged which depended largely on their environment and the creation of a "structure of permanence."
DYNAMO is a simulation language and accompanying graphical notation developed within the system dynamics analytical framework. It was originally for industrial dynamics but was soon extended to other applications, including population and resource studies and urban planning.
In economic and environmental fields, decoupling refers to an economy that would be able to grow without corresponding increases in environmental pressure. In many economies, increasing production (GDP) currently raises pressure on the environment. An economy that would be able to sustain economic growth while reducing the amount of resources such as water or fossil fuels used and delink environmental deterioration at the same time would be said to be decoupled. Environmental pressure is often measured using emissions of pollutants, and decoupling is often measured by the emission intensity of economic output. Examples of absolute long-term decoupling are rare, but recently some industrialized countries have decoupled GDP growth from both production- and, to a lesser extent, consumption-based CO2 emissions.
The Balaton Group is a global network of researchers and practitioners in fields related to systems and sustainability. The name "Balaton Group" refers to the Lake Balaton region of Hungary, where the Group was first constituted, and where most of the Group's annual meetings have taken place. The Balaton Group aims to accelerate and deepen the world's general understanding of systems, long-term perspective and commitment to achieving positive change. The Group believes that these factors are fundamental to sustainable development.
The term collapsology is a neologism used to designate the transdisciplinary study of the risks of collapse of industrial civilization. It is concerned with the "general collapse of societies induced by climate change, scarcity of resources, vast extinctions, and natural disasters." Although the concept of civilizational or societal collapse had already existed for many years, collapsology focuses its attention on contemporary, industrial, and globalized societies.
Thinking in Systems provides an introduction to systems thinking by Donella Meadows, the main author of the 1972 report The Limits to Growth, and describes some of the ideas behind the analysis used in that report.
