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Topic: World human population


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In the News (Fri 14 Jun 19)

  
  The Human Population  Can Earth
A population, then, lives in a community, which is "all the populations of different species that live and interact together within an area at the same time" (Raven).
Therefore, if the human population were to exceed Earth's carrying capacity, "the largest population that can be maintained for an indefinite period of time by a particular environment, assuming no changes in that environment" it could mean extinction for many living organisms on Earth, including humans (Raven).
The human population is estimated at 6 billion (2) and at a 1.9% growth rate, the population would double in 50 years.
www.lhup.edu /smarvel/Seminar/FALL_2004/Eckley_2/index.htm   (2929 words)

  
 Population - Biodiversity Linkage
Even in local case studies where researchers found the growth of nearby human populations to be the most apparent locus of biodiversity loss, these same authors consistently indicated that, on close analysis, a complex mix of interacting conditions and failed remedies were involved (Dompka 1996, Goriup 1998, Brechin et al 1994).
Population growth in these regions has been proceeding at two and a half times the rate of the world's population as a whole.
And we humans ourselves—simultaneously the threat to, and the caretaker of, earthly life—will be among the greatest beneficiaries.
www.ucsusa.org /ssi/biodiversity/population-biodiversity-linkage.html   (3525 words)

  
 Jerry Holechek -- A Growing Population, Rangelands & The Future
This trend is largely driven by rapid human population increase and a demographic shift from the eastern to western United States.
The average annual increase in world grain yield per acre was 2.1% for the 1950 to 1990 period compared to 1.2% for the 1990 to 2000 period.
Stabilization of human population growth and conserving natural resources to the extent possible is a rational hedge against climatic adversity and the possibility that technology will not always stay ahead of human population growth.
www.nativehabitat.org /population-jh.html   (3442 words)

  
 Temperate Forest Foundation: Population Facts
Human population is a key factor in sustainable living.
World population reached 6.1 billion in mid-2000 and is currently growing at an annual rate of 1.2 per cent, or 77 million people per year.
By 2050, world population is expected to be between 7.9 billion (low variant) and 10.9 billion (high variant), with the medium variant producing 9.3 billion.
www.forestinfo.org /Discover/population.htm   (1142 words)

  
 Population and Habitat
The destruction of the natural world we see across the globe today is "fallout" from the human population explosion that has occurred over the course of the last 50 years.
Examples of the negative impacts of human population growth on birds, wildlife and habitat can be seen in nearly every animal family and in most species.
The human population pressure on primates is severe across the globe.
www.audubon.org /campaign/population_habitat/critter.html   (1662 words)

  
 World Population: Boom or Bust?
He postulated that the human population would grow exponentially while food production would increase linearly and therefore "the power of population is indefinitely greater than the power in the earth to produce subsistence." Eventually population would be checked by "misery and vice" in the form of famine, disease, and war.
The Population Reference Bureau put together a history of the world population and trends which are occurring in the population.
Although there is powerful momentum in the near future for large increases in the population because of the large numbers of women of childbearing age, in the longer run of 100-150 years, there is strong evidence that world population will stabilize and probably decline from current levels.
www.uwsp.edu /business/economicswisconsin/e_lecture/pop_sum.htm   (1191 words)

  
 Lecture 24: Human Impacts on the Environment
Human impacts on natural ecosystems and the biosphere have intensified as the human population has grown in size -- a logical place to start our discussion is with human population growth.
Deforestation -- forests around the world being destroyed for lumber, for fuel (1/4 earth population uses wood for fuel) and for agriculture -- deforestation is primarily occurring today in developing countries -- tropical rainforests are disappearing at an alarming rate -- each week a area of forest the size of Delaware is destroyed.
Recall that tropical rainforests are the most diverse of all ecosystems in terms of species diversity -- estimated that 1/2 of the world's species live in tropical rainforests-- destruction of forest impacts on all organisms that live there -- increasing extinction rates.
www.sci.sdsu.edu /classes/bio100/Lectures/Lect24/lect24.html   (1910 words)

  
 World Population Information   (Site not responding. Last check: 2007-09-17)
The world population increased from 3 billion in 1959 to 6 billion by 1999, a doubling that occurred over 40 years.
The world population is projected to grow from 6 billion in 1999 to 9 billion by 2042, an increase of 50 percent that will require 43 years.
The world population growth rate rose from about 1.5 percent per year from 1950-51 to a peak of over 2 percent in the early 1960s due to reductions in mortality.
www.census.gov /ipc/www/world.html   (396 words)

  
 World population - Wikipedia, the free encyclopedia
The world population is the total number of human beings alive on the planet Earth at a given time.
In line with population projections, this figure continues to grow at rates that were unprecedented prior to the 20th century, although the rate of increase has almost halved since growth rates reached their peak in 1963.
Population density map of the world in 1994; Observe the very high concentration along the Ganges, Yangtze and Yellow river basins, Western Europe, the Indonesian island of Java, the United States' BosWash megalopolis, and Southern California.
en.wikipedia.org /wiki/World_human_population   (1803 words)

  
 PAI - Population Issues   (Site not responding. Last check: 2007-09-17)
However, because this rate is applied to a much larger population than in 1970 — when world population stood at 3.7 billion people — the added yearly increments are larger.
If the population growth rate is not reduced further, world population will double by the year 2040.
It took all of human history up to the early 1800s for world population to reach 1 billion people, and until 1960 to reach 3 billion.
www.populationaction.org /issues/index.htm   (471 words)

  
 Ecology.com - Human Population: Challenging the Balance
If population growth continues to be high in these and other countries, attempts to slow down the growth of the world human population in the twenty first century may well be futile.
The other issue is, even if people worldwide choose to have fewer children tomorrow, it will still take 50-60 years for the world's population to stabilize, as there are so many people currently in their childbearing years.
Slowing the growth of the world's population, even though this is happening in many parts of the world, may not be happening quickly enough: The world's populations may still double again by the end of the this century to 12 billion persons.
www.ecology.com /feature-stories/population/population1.html   (1292 words)

  
 The Human Population Bomb
If we observe that the propagation of the global human population is like the wave, and the reproduction numbers of individuals or certain locales are like the molecules, it may be inaccurate for the latter to be looked at as if it tells us something meaningful about the former.
To have suggested, as many scientists have done, that understanding the dynamics of human population does not matter, that the human population problem is not about numbers, or that human population dynamics have so dizzying an array of variables as not to be suitable for scientific investigation, in a way seems not quite right.
Although the human population "explosion" appears to be a huge problem, we can take the measure of it and find a remedy that is consonant with universally shared human values.
www.fragilecologies.com /mar22_05.html   (685 words)

  
 Human Population - Global Issues
The human population of the planet is estimated to now have passed 6 billion people.
The State of the World, 1999 Report from the Worldwatch Institute suggests that the global economy could be seriously affected by environmental problems, such as the lack of access to enough resources to meet growing population demands.
Already around the world we are seeing an increase in violence and human rights abuses as disputes about territories, food and water are spilling into wars and internal conflicts.
www.globalissues.org /EnvIssues/Population.asp   (1078 words)

  
 BioWebQuest
You will be researching various aspects of human population past, present, and future and reporting the implications you discern as you analyze your findings.
Human population size is not constant and is influenced by variables determining the growth rate.
Group #2 calculated the population growth rate of the world population and you need this information to utilize the rule of 70.
wneo.org /WebQuests/TeacherWebQuests/WorldPopulation/biowebquest.htm   (1264 words)

  
 Professor's "Kill 90% of Population" Comments just echoes of UN, Elite NGO policies
Standing in front of a slide of human skulls, Pianka gleefully advocated airborne ebola as his preferred method of exterminating the necessary 90% of humans, choosing it over AIDS because of its faster kill period.
Populations in developed countries are declining and only in third world countries is it expanding dramatically.
It is commonly accepted that the entire world population could all fit into the state of Texas and each have an acre of their own land.
prisonplanet.com /articles/april2006/040406_b_depopulation.htm   (1758 words)

  
 Population growth - Wikipedia, the free encyclopedia
Population growth is change in population over time, and can be quantified as the change in the number of individuals in a population per unit time.
The term population growth can technically refer to any species, but almost always refers to humans, and it is often used informally for the more specific demographic term population growth rate (see below), and is often used to refer specifically to the growth of the population of the world.
Specifically, PGR ordinarily refers to the change in population over a specific time period expressed as a percentage of the number of individuals in the population at the beginning of that period.
en.wikipedia.org /wiki/Population_growth   (490 words)

  
 Should We Extend The Human Lifespan Indefinitely   (Site not responding. Last check: 2007-09-17)
The world's population 'boom' is not a result of an increase in birth rates, but rather a decrease in death rates.
The number of persons aged 60 years or older is estimated to be nearly 600 million in 1999 and is projected to grow to almost 2 billion by 2050, at which time the population of older persons will be larger than the population of children (0-14 years) for the first time in human history.
Humans are becoming the cause of the Earth’s sixth major extinction.
www.biologyofhumanaging.com /sanjose/shouldwe/shld_nts.htm   (2593 words)

  
 PAI: Population Issues: Population   (Site not responding. Last check: 2007-09-17)
The world’s human population currently numbers about 6.4 billion people, and the figure grows by nearly 76 million people each year, or around 209,000 each day.
This annual addition to population is greater than ever before in history prior to the 1980s.
However, because this rate is applied to a much larger population than in 1970—when world population stood at 3.7 billion people—the added yearly increments are larger.
www.populationaction.org /issues/population   (488 words)

  
 NOVA | World in the Balance | PBS
Interviews with five experts reveal the threats facing human populations, national economies, and the global climate.
Examine the startling population growth over the past two millennia, and see what's coming in the next 50 years.
Major funding for "World in the Balance" is provided by Marguerite and Gerry Lenfest, The John D. and Catherine T. MacArthur Foundation, The Richard and Rhoda Goldman Fund (sponsor of the Goldman Environmental Prize), and The William and Flora Hewlett Foundation.
www.pbs.org /wgbh/nova/worldbalance   (284 words)

  
 Fish population on the brink / Experts report downward spiral of marine species, but they say quick action could ...
The world's oceans are under an increasing assault from over-fishing, pollution and global warming that threatens to wipe out vital fisheries and to create a crisis in food supplies before the middle of this century, an international team of scientists warns.
Already, the researchers found, about 90 percent of all the fish and seafood species in the world's oceans have been depleted within the past century, meaning that the annual catch of them has been cut at least in half.
Of those species, 38 percent have collapsed, meaning that their populations have plunged by more than 90 percent -- a road to possible extinction without intensified efforts to protect them, the researchers said.
www.sfgate.com /cgi-bin/article.cgi?f=/c/a/2006/11/03/MNGCEM5H4P1.DTL&hw=fish&sn=001&sc=1000   (779 words)

  
 DIE OFF - a population crash resource page
The human species may be seen as having evolved in the service of entropy, and it cannot be expected to outlast the dense accumulations of energy that have helped define its niche.
Human beings like to believe they are in control of their destiny, but when the history of life on Earth is seen in perspective, the evolution of Homo sapiens is merely a transient episode that acts to redress the planet's energy balance.
THE HEAT IS ON: The warming of the world's climate sparks a blaze of denial, by Ross Gelbspan (12/95).
www.dieoff.org   (4258 words)

  
 The Human Population: Accepting Species Limits
Therefore, the population dynamics of Homo sapiens are effectively relegated to the preternatural realm and are believed to include a number of factors that are so complicated and enormous as to be unsuitable for empirical research or else unknowable.
A theory of human population numbers that could objectively explain the increase and decrease of the human population would be useful.
History is replete with examples of early humans and other ancestors not increasing their food production annually, but rather living successfully off the land for thousands of years as hunters and gatherers of food.
www.ehponline.org /docs/2005/8647/letter.html   (753 words)

  
 Asia's Elephant Wars - Nearly a fifth of the world's human population lives within the range of the Asian elephant; how ...
In all 13 Asian nations where elephants are still found, mushrooming human populations mean shriveling habitat for elephants, as well as heightened conflict between people and animals.
One hundred years later, the human population has soared from fewer than 8 million to 63 million, and the green canopy has shrunk to less than 20 percent of its former area.
According to WWF and IUCN--The World Conservation Union, only about 35,000 to 45,000 Asian elephants survive in the wild today, less than a tenth the estimated total of their better-known cousins, the African elephants.
www.findarticles.com /p/articles/mi_m1169/is_2002_Oct-Nov/ai_92409047   (914 words)

  
 Demographic Links
One of sessions at the 1998 meetings of the American Association for the Advancement of Science was "Is the Human Species a Cancer on the Planet?" Dr. Warren Hern, a Colorado physician and epidemiologist, noticed the similarities between aerial views of urban centers and melanoma.
According to demographic transition theory, there are five demographic epochs in the history of human population growth which have a profound bearing on such things as the pace of social change, the rate of cultural evolution, or the relative size of dependent populations.
Among the demographers' statistics is the dependency ratio of a population, comprised of the proportion of non-working young (the youth dependency ratio, those 15 and under divided by those 16 to 64 years of age) and old (whose dependency ratio is the number 65 and older divided again by those 16 to 64).
www.trinity.edu /~mkearl/demograp.html   (2519 words)

  
 LiveScience.com - Mind Control by Parasites
06:41 am ET Half of the world's human population is infected with Toxoplasma, parasites in the body—and the brain.
Toxoplasma gondii is a common parasite found in the guts of cats; it sheds eggs that are picked up by rats and other animals that are eaten by cats.
Human cells raised in petri dishes, and infected with Toxoplasma, will respond to drugs like haloperidol; the growth of the parasite stops.
www.livescience.com /scienceoffiction/060210_technovelgy.html   (896 words)

  
 World Population Problems - Environmental and World Population Problems
population in millions, in 50-year intervals, since the year 1750.
Earth Government hastily implements the new plan for space colonization; the only only alternative, forced control of world population problems, is not politically attractive.
Adam Hampton, the newest member of the population project's organizing team, objects to an excessively optimistic use of old and some very new technologies.
www.booksaboutthefuture.com /world-population-problems.htm   (918 words)

  
 World Population   (Site not responding. Last check: 2007-09-17)
As of 12-Dec-106 (19:01:34 GMT), world population is
And, yes, while the count may not be exact, there really are, more or less, that many people on the planet.
World POPClock from US Bureau of the Census
www.ibiblio.org /lunarbin/worldpop   (146 words)

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