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Old August 5th, 2016, 08:13 PM   #11
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A guy at coffee the other day stated that WHO had announced that the earth can only sustain about 4 billion people. When challenged he couldn't produce a source of this, and I couldn't get one from Mr. Google. But I did do some digging.

The first of many complications is what is one using as a definition of an adequate lifestyle. Assuming everyone wants meat three times a day or assuming that everyone would be happy with lentils and salad give very different results.

How many electronic toys are needed? It's amazing how many of the articles quoted Ghandi: "man's need is greatly exceeded by man's greed" or very similar.

There are lots of papers on this subject that have been published and the conclusions vary from half a billion to close to 100 billion, a terrible spread. But there were two meta analyses, essentially a weighted averaging of the existing articles on this subject (with apologies to the researchers in the field, it is far more complex than a simple average).

One came up with an answer of 6 billion, the other with 7.7 billion.

Currently the population is about 7 billion and is expected to peak at 11 billion in 2050. So, what do we do?

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Old August 6th, 2016, 04:00 AM   #12
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Originally Posted by RNG View Post
A guy at coffee the other day stated that WHO had announced that the earth can only sustain about 4 billion people. When challenged he couldn't produce a source of this, and I couldn't get one from Mr. Google. But I did do some digging.

The first of many complications is what is one using as a definition of an adequate lifestyle. Assuming everyone wants meat three times a day or assuming that everyone would be happy with lentils and salad give very different results.

How many electronic toys are needed? It's amazing how many of the articles quoted Ghandi: "man's need is greatly exceeded by man's greed" or very similar.

There are lots of papers on this subject that have been published and the conclusions vary from half a billion to close to 100 billion, a terrible spread. But there were two meta analyses, essentially a weighted averaging of the existing articles on this subject (with apologies to the researchers in the field, it is far more complex than a simple average).

One came up with an answer of 6 billion, the other with 7.7 billion.

Currently the population is about 7 billion and is expected to peak at 11 billion in 2050. So, what do we do?
I think humans have reached maximum population density. China had a good idea, two babies per woman is max babies which gives zero population growth.
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Old September 23rd, 2016, 08:50 PM   #13
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I'm not sure what we should do, but it's pretty simple what we will do.

We'll continue savaging the Earth. We'll deplete aquifers. We'll go to war over resources. Formerly habitable places will become uninhabitable. We'll suffer terrible losses as pathogens win the antibiotic war.

Because of these facts, the population may not peak at 11 billion.
Who wants to live with the crowded conditions of India or China? Even if we can keep everyone healthy do we want the crowding?
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Old September 23rd, 2016, 09:19 PM   #14
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Who wants to live with the crowded conditions of India or China? Even if we can keep everyone healthy do we want the crowding?
Not I.
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Old September 23rd, 2016, 11:32 PM   #15
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Who wants to live with the crowded conditions of India or China? Even if we can keep everyone healthy do we want the crowding?
Bubba is a contributing poster on here and lives in Hangzhou, China. Bubba was born in Tennessee I think and moved to China for a good paying job. Bubba speaks some Mandarin. He has very little if anything to say good about China. The Chinese people are extremely racist and the police stop him all the time to 'check his papers'.
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Old September 24th, 2016, 12:07 AM   #16
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Quote:
Originally Posted by RNG View Post
A guy at coffee the other day stated that WHO had announced that the earth can only sustain about 4 billion people. When challenged he couldn't produce a source of this, and I couldn't get one from Mr. Google. But I did do some digging.

The first of many complications is what is one using as a definition of an adequate lifestyle. Assuming everyone wants meat three times a day or assuming that everyone would be happy with lentils and salad give very different results.

How many electronic toys are needed? It's amazing how many of the articles quoted Ghandi: "man's need is greatly exceeded by man's greed" or very similar.

There are lots of papers on this subject that have been published and the conclusions vary from half a billion to close to 100 billion, a terrible spread. But there were two meta analyses, essentially a weighted averaging of the existing articles on this subject (with apologies to the researchers in the field, it is far more complex than a simple average).

One came up with an answer of 6 billion, the other with 7.7 billion.

Currently the population is about 7 billion and is expected to peak at 11 billion in 2050. So, what do we do?
It is easy to count: every human needs at least one hectare of land to support himself or herself. As the land area of the earth is 148 million square km, and one square km is 100 hectares, the maximum population the earth can sustain is 14.8 billion humans.

Last edited by fdtwain; September 24th, 2016 at 12:13 AM.
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Old April 21st, 2017, 02:02 AM   #17
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It depends on technology, but that doesn't discount the fact that one of the best public investments is family planning, world wide of course.
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Old April 21st, 2017, 05:49 AM   #18
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Originally Posted by RNG View Post
A guy at coffee the other day stated that WHO had announced that the earth can only sustain about 4 billion people. When challenged he couldn't produce a source of this, and I couldn't get one from Mr. Google. But I did do some digging.

The first of many complications is what is one using as a definition of an adequate lifestyle. Assuming everyone wants meat three times a day or assuming that everyone would be happy with lentils and salad give very different results.

How many electronic toys are needed? It's amazing how many of the articles quoted Ghandi: "man's need is greatly exceeded by man's greed" or very similar.

There are lots of papers on this subject that have been published and the conclusions vary from half a billion to close to 100 billion, a terrible spread. But there were two meta analyses, essentially a weighted averaging of the existing articles on this subject (with apologies to the researchers in the field, it is far more complex than a simple average).

One came up with an answer of 6 billion, the other with 7.7 billion.

Currently the population is about 7 billion and is expected to peak at 11 billion in 2050. So, what do we do?
https://sustainabledevelopment.un.or...ld/publication
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Old April 21st, 2017, 06:55 AM   #19
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I'm not sure what we should do, but it's pretty simple what we will do.

We'll continue savaging the Earth. We'll deplete aquifers. We'll go to war over resources. Formerly habitable places will become uninhabitable. We'll suffer terrible losses as pathogens win the antibiotic war.

Because of these facts, the population may not peak at 11 billion.
Life always finds a way.
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Old April 21st, 2017, 09:38 AM   #20
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That's a wishlist, not a guide to how to achieve those wishes.
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