How Many People Share Our World?

  • Thread starter rootX
  • Start date
In summary: In the US we are about to enter that phase as we had a *baby boom* after WWII, and then the population began to normalize, the baby boomers are now approaching retirement. After the baby boomers are gone, there will no longer be a disproportionate elderly population.
  • #36
Wow, were are already up to 7 billion?

Someone needs to invent a food replicator like on Star Trek and we'll be fine.

"Earl grey, hot" :)
 
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  • #37
leroyjenkens said:
If you want to reduce the population growth rate, then you need to attack the root of the problem. Education indirectly reduces birthrates. Get everyone smarter and the problem will fix itself.
Actually, I think the root of the problem lies elsewhere.
 
  • #38
The US isn't the one with the population growth problem. Its the industrial countries...
Lets hope they stabalize soon.

Or maybe we should hope that they don't, and we are forced to populate the solar system...
 
  • #39
GregJ said:
Wow, were are already up to 7 billion?

Someone needs to invent a food replicator like on Star Trek and we'll be fine.

"Earl grey, hot" :)

Actually, the UN count seems to be a little off. They have a lot more people living in California than the US Census does.
 
  • #40
shashankac655 said:
what do you mean ,how can that help?
If you don't control the population artificially (that is not aiding poor countries to sustain population that they otherwise cannot), population will decrease to the desired level. So, every country will have number of people that it is capable of supporting. I also support education because that doesn't fall under artificial means of controlling population.

One of the reasons why poor people have more children especially in the third world countries is because there ,the infant mortality rates are high due to lack of basic health care,so people tend to have more children as an insurance policy.
That doesn't tell why they have high population growth rate. Population growth rate accounts for the deaths:
The average annual percent change in the population, resulting from a surplus (or deficit) of births over deaths and the balance of migrants entering and leaving a country.
from cia.

There are also other reasons like they will keep having children until they get a male child(women/girl-child are severely discriminated).
Yes, those other reasons explain why they tend to how more children. Mortality rate is not the main reason.
 
  • #41
1mmorta1 said:
The US isn't the one with the population growth problem. Its the industrial countries...

How about the recently industrialized countries?

Nature has a way of finding its own balance. Regardless of the species, when it comes to population, that usually involves a sizable minority of them suffering from starvation and disease. Given significant changes in the environment, that minority can rise to a majority.
 
  • #42
Personally, I don't see how anyone dares to advocate any kind of population limitations without first maximizing the efficiency of resource-utilization. Anyone is free to have as few children as they want, but what right do they have to suggest other people have less kids?
 
  • #43
rootX said:
If you don't control the population artificially (that is not aiding poor countries to sustain population that they otherwise cannot), population will decrease to the desired level. So, every country will have number of people that it is capable of supporting. I also support education because that doesn't fall under artificial means of controlling population.


That doesn't tell why they have high population growth rate. Population growth rate accounts for the deaths:
from cia.


Yes, those other reasons explain why they tend to how more children. Mortality rate is not the main reason.

No, actually it doesn't work that way. That aid is not aid that is meant to increase the population or sustain it, it just about not letting them starve to death.You yourself said that education can help ,remember that the poor people don't have education so whether or not you give them aid ,whether or not they have what it takes to raise a lot of children ,they will have children ,since they are uneducated they don't educate their children as well , they don't know the importance of education.

Why is it that only poor countries have high birth rates? because poor people don't know that they have to provide education and all other facilities to their children,a middle class family won't have so many children because they know that it very difficult and expensive to provide education and other things to their children.
I know this because i am from a country which faces these problems ,i read some where that every year in the world ,8 million children die from diseases which are preventable(2 million in India),mostly north India which has the poorest states,majority of the India's population growth comes from these poor states,some other states are near replacement fertility.

“More than 300 million Indians earn less than US $1 everyday and about 130 million people are jobless.” The people, who have to struggle to make two ends meet produce more children because more children mean more earning hands.Also, due to poverty, the infant mortality rate among such families is higher due to the lack of facilities like food and medical resources. Thus, they produce more children assuming that not all of them would be able to survive.
 
  • #44
This web page has a graph showing that there are an estimated 950 million malnourished people in the world in 2010.
http://www.worldhunger.org/articles/Learn/world%20hunger%20facts%202002.htm"
The graph also shows an estimated 875 malnourished people in 1969. Am I reading it correctly? But the population was much different in 1969. Here is a web page with a graph that shows the world population in 1969 to be 3.6 billion.
http://en.wikipedia.org/wiki/File:World_population_history.svg"
In other words, there are 3.4 billion more people now than 42 years ago, nearly double, but hardly any increase in estimated hunger. What do you make of it? Does it mean anything at all?
 
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  • #45
Jimmy Snyder said:
This web page has a graph showing that there are an estimated 950 million malnourished people in the world in 2010.
http://www.worldhunger.org/articles/Learn/world%20hunger%20facts%202002.htm"
The graph also shows an estimated 875 malnourished people in 1969. Am I reading it correctly? But the population was much different in 1969. Here is a web page with a graph that shows the world population in 1969 to be 3.6 billion.
http://en.wikipedia.org/wiki/File:World_population_history.svg"
In other words, there are 3.4 billion more people now than 42 years ago, nearly double, but hardly any increase in estimated hunger. What do you make of it? Does it mean anything at all?
Because we're feeding them.

The ability of the world to feed itself has improved dramatically over the last three decades. Intensive agriculture and new crop varieties have fueled steadily increasing per capita food production. Decreasing world food prices have made food more available to a greater number of people. In 1975, approximately one in three people in developing countries was underfed; today, the number of underfed has dropped to onein five.

The long-term sustainability of this progress, however, is increasingly at risk. Advances in major crop yields, such as wheat and rice, have slowed. The intensive use of land and water, which brought major production increases, now brings growing environmental costs. And most significantly, world population continues to grow at the rate of nearly 100 million people per year--mostly in the developing world.

Though millions have benefited from the world's agricultural progress, the
distribution of global food supplies is very uneven, with hunger still prevalent in someregions of the world, particularly South Asia and sub-Saharan Africa.

The challenge of world hunger in the 1990s is real: 800 million people are chronically undernourished. More than 180 million children around the world are severely underweight. 13 million people die every year from hunger and related causes (mostly children under age 5). An estimated 35 million people "at risk" needed 4.5 million tons of emergency food assistance in 1994. Most hunger is still found in rural areas--large regions of persistent poverty, such as the Horn of Africa, where development has failed and fragile ecosystems and civil strife combine to keep hunger alive. Rapid urbanization has also drawn growing numbers of rural poor who have little or no access to jobs and are therefore unable to feed their families.

page 7 http://www.usaid.gov/policy/ads/200/foodsec/foodsec.pdf
 
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  • #46
Evo said:
Because we're feeding them.
As long as we continue to feed them, they will continue to have babies. Since I find it morally objectionable to prevent them from having babies, would it be ok if we stop feeding them? That will certainly ease my conscience.
 
  • #47
Jimmy Snyder said:
This web page has a graph showing that there are an estimated 950 million malnourished people in the world in 2010.
http://www.worldhunger.org/articles/Learn/world%20hunger%20facts%202002.htm"
The graph also shows an estimated 875 malnourished people in 1969. Am I reading it correctly? But the population was much different in 1969. Here is a web page with a graph that shows the world population in 1969 to be 3.6 billion.
http://en.wikipedia.org/wiki/File:World_population_history.svg"
In other words, there are 3.4 billion more people now than 42 years ago, nearly double, but hardly any increase in estimated hunger. What do you make of it? Does it mean anything at all?
Dig a little deeper. You'll be tapping into the heart of population concerns: greed . . . or possibly naive materialistic consumerism.
 
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  • #48
dipungal said:
Dig a little deeper. You'll be tapping into the heart of population concerns: greed . . . or possibly naive materialistic consumerism.
That thought had occurred to me. We're into the third century of this crisis if you start counting with Malthus. The solutions seem worse than the problem.
 
  • #49
dipungal said:
Personally, I don't see how anyone dares to advocate any kind of population limitations without first maximizing the efficiency of resource-utilization. Anyone is free to have as few children as they want, but what right do they have to suggest other people have less kids?

From a practical standpoint, maximizing efficiency only to worry about limiting population when we're reaching the limit puts billions of people into vary precarious positions. Think of how much nicer our world would be without overcrowding!

On the other hand, I believe children are a real blessing, and do not like the idea of depriving parents of that blessing. Nevertheless, how much blessing do parents need?
 
  • #50
DoggerDan said:
Think of how much nicer our world would be without overcrowding!
Overcrowding? A tiny fraction of the Earth's surface is populated.
 
  • #51
DaveC426913 said:
Overcrowding? A tiny fraction of the Earth's surface is populated.
But the places people have to live for work, food, etc... are mostly overcrowded. Sure, you can try living in the Gobi desert.
 
  • #52
Sometimes it makes me wonder if we should really be doing research on trying to cure things like cancer, slow aging, and solving other diseases. Maybe it is just nature's way of containing population.
 
  • #53
Evo said:
But the places people have to live for work, food, etc... are mostly overcrowded. Sure, you can try living in the Gobi desert.

That's the point of dioungal's 'efficient resource utilization' comment:

I don't see how anyone dares to advocate any kind of population limitations without first maximizing the efficiency of resource-utilization

We crowd into cities because it's convenient not because we've run out of room. There is a lot of the world that is way more liveable than the Gobi desert with some care and attention.
 
  • #54
DaveC426913 said:
That's the point of dioungal's 'efficient resource utilization' comment:



We crowd into cities because it's convenient not because we've run out of room. There is a lot of the world that is way more liveable than the Gobi desert with some care and attention.
But space isn't the problem, it's the ability to financially and economically sustain people. how are people going to get money if they can't find a job? We can't employ the people alre4ady here, how can we keep adding to the list of unemployed?
 
  • #55
rootX said:
It's not the US but the third world countries that concern me. I doubt you can put any kind of caps on them.

caps would not work, one needs a stopcock.
 
  • #56
wolram said:
caps would not work, one needs a stopcock.

A statement that equally applies to the overpopulation solution too. :biggrin:
 
  • #57
Evo said:
But the places people have to live for work, food, etc... are mostly overcrowded. Sure, you can try living in the Gobi desert.
There are many more resources on this planet than we know. Don't discount the resourcefulness of man.
 
  • #58
DoggerDan said:
From a practical standpoint, maximizing efficiency only to worry about limiting population when we're reaching the limit puts billions of people into vary precarious positions. Think of how much nicer our world would be without overcrowding!
That's if you actually believe in the overpopulation myth.

DoggerDan said:
On the other hand, I believe children are a real blessing, and do not like the idea of depriving parents of that blessing. Nevertheless, how much blessing do parents need?
The structure of your question makes it look as if children were a problem.
 
  • #59
dipungal said:
There are many more resources on this planet than we know. Don't discount the resourcefulness of man.
People are unemployed and it's getting worse, it's not a matter of "resources". It's not a matter of space. OY.
 
  • #60
DaveC426913 said:
Overcrowding? A tiny fraction of the Earth's surface is populated.

True. So what's your opinion on Earth's limit, assuming we stick to land-based farming and stop raping the oceans of fish? Sorry, but as a diver I'm well away of just how far down our fisheries are doing these days.

What I don't know is how our ocean hauls compare to that produced on land. If a minor amount, we could cut back on fish and still survive. If it's huge, then how do you propose to seriously increase land production to cover the difference? One thing we can't do is continue fishing the way we do. We've over-reached the oceans ability to produce for more than a decade, and if we dig too deep, we'll have more than a handful of lean years during which we will have no choice but to allow the oceans to recover.

Evo said:
But the places people have to live for work, food, etc... are mostly overcrowded. Sure, you can try living in the Gobi desert.

Lol, is that the only other option? I don't think so. You do bring up a good point, though, and that's most humans tend to congregate rather than spread out. A lot of that has to do with the fact humans tend to somewhat specialize, which requires trading with others i.e living close by those with whom they trade. For someone who's a jack of all trades, they can live further out. Still, things like medical care require some regular contact.
 
  • #61
Evo said:
People are unemployed and it's getting worse, it's not a matter of "resources". It's not a matter of space. OY.

So it's a matter of resourcefulness?

From what I've read of Darwin, has this changed all that much in the last several million years? Perhaps we have a tremendously greater degree of cooperation than a collection of chimps.

So, let's make this work for us. Lucy didn't have the Internet.
 
  • #62
DoggerDan said:
So it's a matter of resourcefulness?
No, it's the matter of unemployment and all of the trickle down problems that come wih unemployment.
 
  • #63
Evo said:
People are unemployed and it's getting worse, it's not a matter of "resources". It's not a matter of space. OY.

But that's clearly a failure of policy more than anything else. Its not like we've run out of productive things for people to do. Much of the world doesn't have infrastructure, and plenty of people COULD be employed building it.

Until we hit a wall on energy production (maybe solar gets good enough, maybe it doesn't), there will always be useful things people COULD be doing, we just need public policy good enough to make sure they have the opportunity to do it.
 
  • #64
ParticleGrl said:
But that's clearly a failure of policy more than anything else. Its not like we've run out of productive things for people to do. Much of the world doesn't have infrastructure, and plenty of people COULD be employed building it.

Until we hit a wall on energy production (maybe solar gets good enough, maybe it doesn't), there will always be useful things people COULD be doing, we just need public policy good enough to make sure they have the opportunity to do it.
People don't have the skills to change careers. Who's going to pay for their new education and support them and their families until they can get jobs again? Who's going to pay to relocate them and their families? Who's going to pay for these new jobs?

Too many people applying for too few jobs. We have never had anywhere near this many people on this planet, I'm talking billions more than we've ever had on this planet. We're hitting the wall and people are suffering and the effects are rippling around the world in mass displays of discontent.
 
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  • #65
Evo said:
People don't have the skills to change careers.

Luckily the majority of unemployed people are young college graduates- the malleable putty of the labor market. Also, we have tons of unemployed construction workers in the US, and plenty of infrastructure projects that need doing- why not print some money, and hand it directly to construction workers? In exchange, they can repair our awful roads, reinforce our bridges, fix up our power grid. It would certainly decrease unemployment.

Too many people applying for too few jobs.

The obvious solution is to create more jobs. Remember more people = more people who want stuff = more jobs. Right now, we've had a massive failure of both monetary and fiscal policy so things suck, I agree. But remember, there were less people during the great depression, and things were way worse. This isn't a new problem related to population.

We have never had anywhere near this many people on this planet, I'm talking billions more than we've ever had on this planet.

I agree, but what problems do we have that we haven't had in the past, when we had far fewer people? Yes, people are going hungry, but just as many people were going hungry in the 60s. We have a lot of unemployed people, but a larger percentage of people were unemployed during the great depression.

Remember, when you say "there aren't enough jobs for people" what that really MEANS is that there isn't enough work for all the people. We aren't there yet, there is PLENTY of useful work (both high and low skill). The fact that we have work that needs doing AND unemployed people means that we are doing something wrong (we can argue about what). It doesn't mean we have too many people.

Similarly, the fact that we have food surpluses but starving people means we are doing something wrong, not that we can't feed everyone.

The fundamental constrain we risk bumping up against is energy production/oil. We well might, but we aren't there yet.
 
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  • #66
ParticleGrl said:
Luckily the majority of unemployed people are young college graduates- the malleable putty of the labor market. Also, we have tons of unemployed construction workers in the US, and plenty of infrastructure projects that need doing- why not print some money, and hand it directly to construction workers? In exchange, they can repair our awful roads, reinforce our bridges, fix up our power grid. It would certainly decrease unemployment.
Isn't that what Dubai was doing .. doing all these extravagant projects? They kind of went downhill once markets crashed. And, you cannot print money that easily to fund those projects.
The fundamental constrain we risk bumping up against is energy production/oil. We well might, but we aren't there yet
We might reach there much sooner if we continue to produce mindlessly. While it can might well be argued that currently overpopulation is not a problem but I think you will agree that one point we will run into this problem sooner or later. You cannot just say ok we are now low on energy so it's time to stop population growth .. it just doesn't work. Further, you will run into all kinds of political and economical troubles all over the world. We are well seeing them even right now!
 
  • #67
rootX said:
Isn't that what Dubai was doing .. doing all these extravagant projects? They kind of went downhill once markets crashed.

I'm also not suggesting extravagant projects- much of Africa, South America and China don't yet have cell coverage. Building towers would clearly be a useful endeavor. Just in the US, we can repair an ailing power grid and awful roads. This isn't lavish, its basic upkeep. There are obviously useful things that aren't being done.

While it can might well be argued that currently overpopulation is not a problem but I think you will agree that one point we will run into this problem sooner or later.

Lets say incremental improvements in solar power make it cheaper than oil or coal in the next decade. When will we hit the overpopulation problem at that point?

Further, you will run into all kinds of political and economical troubles all over the world. We are well seeing them even right now!

I'd argue that political and economic turmoil are happening because political and economic policies are failing.

What are we fundamentally running out of?
1. food- no, we can feed the whole world pretty easily right now.
2. space- drive across the midwest of the US. Plenty of livable land is sitting empty. The US has nowhere near the population density of (say) Japan.
3. work?- I can name dozens of useful projects people could be doing and aren't. We have 'developing' countries that have clear infrastructure decifits relative to 'industrialized' countries. Even some industrialized countries have let their infrastructure decay unacceptably (the US).
4. Energy- you can MAYBE make the argument here, but there is still plenty of coal, etc. Wind, solar,etc are more expensive, but we certainly aren't using them to their potential.
5. Water- I've seen this one come up, admittedly, I don't know much about it. Maybe we are hitting a water shortage? Someone with more knowledge can maybe discuss this.

Now, admittedly we aren't perfectly distributing what we have, so some people are going hungry, and some people can't find work to do. This is tragic, but its not overpopulation, its poorly managed assets and bad public policy.
 
  • #68
Evo said:
No, it's the matter of unemployment and all of the trickle down problems that come wih unemployment.

Whenever I've been unemployed, Evo, there were no trickle-down anything. They only thing that put food on my table was my resourcefulness.

It worked, so why are you saying that's not the answer?
 
  • #69
7 billion! That is too much, I don't want to think about that today, I'll think about that tomorrow. Even if it will be 7.07 billion or something tomorrow or soon.

Today I'll think about - actually it is quite some time I have thought this - if you believe in reincarnation it explains the rapid extinction of species. Though the increase in human population explains the extinction of species and biodiversity in other ways.
 
  • #70
DoggerDan said:
Whenever I've been unemployed, Evo, there were no trickle-down anything. They only thing that put food on my table was my resourcefulness.

It worked, so why are you saying that's not the answer?
Evo was not saying money trickles down, she was saying problems trickle down. It's a negative not a boon.

Example: too many people become unemployed and other people (like local stores ans services that depend on them) can't support themselves. The job loss and business loss snowballs.
 

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