in The Limits to Growth, a world where population…

Based on their evaluations of available natural resources,scientists of the Royal Society and the U.S. National Academy ofSciences have issued a joint statement reinforcing the concernabout the growing imbalance between the world's population andthe resources that support human lives (RS and NAS, 1992).

, the world population growth ..

Dueling projections of population growth present different visions of the world's future.
Photo provided by

World Population Balance - sustainable world and US population

Yet none of these measures will be sufficient to ensureadequate food supplies for future generations unless the growthin the human population is simultaneously curtailed. Severalstudies have confirmed that to maintain a relatively highstandard of living, the optimum population should be less than200 million for the U.S. and less than 2 billion for the world(Pimentel et al., 1994). This assumes that from now until anoptimum population is achieved, strategies for the conservationof land, water, energy, and biological resources are successfullyimplemented and a sound, productive environment is protected.

WOA! World Population Awareness

RS and NAS. 1992. "The Royal Society and the NationalAcademy of Sciences on Population Growth andSustainability." Population and Development Review 18 (2) :375-378.

US California: Sierra Growth to Bring More Congestion, Development June 27, 2005 Associated Press. The population of the Sierra Nevada could triple in the next 35 years.
Photo provided by

World population continues to increase

As the world population continues to grow geometrically, greatpressure is being placed on arable land, water, energy, andbiological resources to provide an adequate supply of food whilemaintaining the integrity of our ecosystem. According to theWorld Bank and the United Nations, from 1 to 2 billion humans arenow malnourished, indicating a combination of insufficient food,low incomes, and inadequate distribution of food. This is thelargest number of hungry humans ever recorded in history. InChina about 80 million are now malnourished and hungry. Based oncurrent rates of increase, the world population is projected todouble from roughly 6 billion to more than 12 billion in lessthan 50 years (Pimentel et al., 1994). As the world populationexpands, the food problem will become increasingly severe,conceivably with the numbers of malnourished reaching 3 billion.

Economic Growth - Our World in Data

NPG Cites Historic Opportunity to Rein-in Population Growth. In advance of a major push to decide the fate of illegal young people in the U.S. currently covered by the Deferred Action for Childhood Arrivals program, NPG President Donald Mann has called on Congress to also take this opportunity to make a number of additional “nation changing” reforms to America’s broken immigration system[…]

The World Factbook - Central Intelligence Agency

More than 99 per cent of the world's food supply comes fromthe land, while less than 1 per cent is from oceans and otheraquatic habitats (Pimentel et al., 1994). The continuedproduction of an adequate food supply is directly dependent onample fertile land, fresh water, energy, plus the maintenance ofbiodiversity. As the human population grows, the requirements forthese resources also grow. Even if these resources are neverdepleted, on a per capita basis they will decline significantlybecause they must be divided among more people.