Can the earth sustain all the people who live on it?

You forget that most of the world’s water is in the Northern Hemisphere of the planet.

( Atleast that’s what I heard on the NOVA television program.)

I actually heard that there are expiriments to clone animals in order to grow food consumption to meet a increasingly larger population. ( How about that for science fiction that is currently being thought up to someday be a reality?)

Governments should develope programmes to sustain it’s country’s populations, as they aren’t doing anything to curb the number of pregnancies of those with lesser means of sustaining their offspring.

Infrastructure and education would help develop water technologies. The continent of Africa has so many warlords with their own agendas for making money fast, most of the areas they occupy will never get a foothold in the agricultural field. I’ve often wondered how many resources are being held in stasis due to the control of those power mongers.

Carrying Capacity refers to the largest population that can be maintained indefinitely by a given environment. Human carrying capacity is dynamic and uncertain.

Human influence on the planet has increased faster than human population. Nevertheless, human population more than quadrupled from 1860 to 1991. Human use of inanimate energy increased from 1 billion to 93 billion megawatt hours/year.

Human population is now at 6 billion, and will double in 43 years if we continue to grow at a rate of 1.6% per year.Less developed countries are growing at a rate of 1.9% per year. Developed countries are growing at a rate of 0.3-0.4% per year. Total fertility rate in less developed countries is 4.2 children per woman. Total fertility rate in developed countries such as Italy, Germany and Spain is 1.2 to 1.3 children per woman.

Unless fertility in less developed countries falls substantially and increases in some developed countries, global fertility could exceed or fall below that assumed by the UN. The main question is how many humans can the earth support? Can earth support the people projected for 2050 i. e. 7.8 to 12.5 billion?

Human carrying capacity depends on natural constraints, which are not fully understood. How many people the earth can support depends on individual and collective choices and these choices will change with time and so will the number of people.

Still, there are signs that we are close to the carrying capacity. Fossil fuels are projected to be exhausted by 2076 is one. That species are going extinct at a rate estimated at 4000 a year is another. The rate of change of the composition of the atmosphere (global warming) is a third.

Which are fully denied because today’s academics and philosophical circles would have us believe that there are none.

It’s not just the continent of Africa that has problems with water shortages. There is the middle east and parts of the asian steppes that deal with a growing water shortage.

( Parts of South America, Austrailia, and even parts of the south western part of the united states.)

( I’m sure there are more places with water shortages than what I have listed.)

They can only do so much. You have to have water in order to use it as a resource.

Quite alot I’d imagine.

This is the reason why you will see warlords in Africa living in a mansion with two imported mercedes benz while the rest of their people live in mud bricked flats.

I don’t get your meaning OC.

Anyway, for a while I have been thinking about how the economic goal of a “growth economy” leads to an unsustainable depletion of resources. Today I came across this @ earthsky.org:

I maintain that a steady state economy is a philospohically sound goal for individuals and society as a whole.

The science and philosophical community would have us believe that all human behavior is natural therefore overpopulation is natural where there is no unnatural and with there being no unnatural there are no limits that define existence especially when it concerns human beings.

The survival and the demise of the human species would both be natural states of affairs. But it’s also natural to want to survive.

The point I was trying to make is that some would say that it is unnatural that we have let our specie reach the mass numbers as it exists today but since science and philosophical communities have defined there to be no such thing as unnaturalness they have defined human beings to have no limitations giving humanity an excuse to define itself to have no limits at all.

Maybe some have, but carrying capacity is a concept of ecological science that makes it clear that humans like every other species does have limits. If we don’t impose some self restraint on a global scale we will find out what those limits are and it ain’t gonna be pretty.