Human overpopulation

measurement of population per unit area or unit volume

total number of living humans on Earth

population control policy which was used by the People's Republic of China

undesirable condition where human numbers exceed the current carrying capacity of the environment

increase in the number of individuals in a population

number of children a woman is expected to have barring select circumstances

maximum population size of the species that the environment can sustain indefinitely

thumb|Thomas Robert Malthus, after whom Malthusianism is named Malthusianism is a theory that population growth is potentially exponential, according to the Malthusian growth model, while the growth of the food supply or other resources is linear, which eventually reduces living standards to the point of triggering a population decline. This event, called a Malthusian catastrophe (also known as a Malthusian trap, population trap, Malthusian check, Malthusian snatch, Malthusian crisis, point of crisis, or Malthusian crunch) has been predicted to occur if population growth outpaces agricultural

depopulation in humans is any great reduction in a human population caused by events such as long-term demographic trends

thumb|Crowds at the Trevi Fountain in Rome

practice of controlling rate of growth

American writer (1935-2018)

conceptual collapse in behavior which can result from overcrowding

economy made up of constant physical wealth and population size

The biocapacity or biological capacity of an ecosystem is an estimate of its production of certain biological materials such as natural resources, and its absorption and filtering of other materials such as carbon dioxide from the atmosphere.

government-imposed limit of two children per family

population planning policy of China

condition of demographic balance where population remains constant over time

world population growth projections

population control policy in China

branch of philosophy

movement by people from one place to another over the course of history