The Instigator
KingofDebating
Con (against)
The Contender
DrunkHoboSniper
Pro (for)

Have we reached Earths Carrying Capacity?

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Voting Style: Open Point System: 7 Point
Started: 2/26/2018 Category: Science
Updated: 2 years ago Status: Debating Period
Viewed: 362 times Debate No: 109750
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KingofDebating

Con

we have not reached earths carrying capacity beacause scientists have said that the max is 10 billion,
DrunkHoboSniper

Pro

WE'VE ALREADY OVERSHOT THE EARTH'S CARRYING CAPACITY. ONLY A SMALL POPULATION CAN BE SUSTAINABLE
Caldwell in 2003 writes

While it is indeed possible to manage human population at a long-term sustainable level, the sustainable level of human population is but a small fraction of today"s high levels. The fact is that human population has grossly exceeded the carrying capacity of the planet. It has grown to massive size because of the one-time tapping of fossil fuel. The recurrent budget of solar energy can support at most a few hundred million people. Because petroleum will soon be gone, and because human numbers are so high, it is now totally impossible for human population to shrink back to sustainable levels in an orderly fashion, before the end of the petroleum era. A precipitous collapse of human population is now inevitable. This is quite apart from the possibility of an ecological disaster brought on by mankind"s mass extermination of the species comprising its ecological home, or by global warming. We have "overshot" the carrying capacity of the planet, and the population will collapse as soon as petroleum exhausts (or sooner). (See Prof. William R. Catton, Jr."s article on overshooting carrying capacity, at http://solutions.synearth.net... .)

[Joseph George Caldwell, PhD, The End of the World, and the New World Order

Five million with one industrialized society is carrying capacity
Caldwell in 2014 writes

Candidate minimal-regret population: A global human population of 5 million
hunter-gatherers and a single industrialized country of 5 million.
The "candidate minimal-regret population" consists, first, of a very-low-density
global population of hunter-gatherers. Why 5 million? Because it appears from
archeological evidence that the planet was able to support about 5 million hunting gathering human beings for hundreds of thousands of years, without causing substantial
changes to the biosphere. (In How Many People Can the Earth Support?, Cohen
discusses estimates of prehistoric global human population sizes; accepted estimates
include the ranges 5-10 million and 2-20 million. Cohen accepts the range 2-20 million
as credible. We shall use the range 2-20 as an interval estimate and the figure 5 million
as a point estimate. See also Lynn Collins" article, "World Population," in International
Encyclopedia of Population.) There is justification for believing this to be a sustainable
level, because it proved to be so for hundreds of thousands, perhaps millions, of years.
This belief is based on actual experience, not on conjecture. Since there are about 12.5
billion hectares of habitable land on the planet, a population of 5 million corresponds to a density of about four people per hundred square kilometers. This is about what the
population and population density of human hunter-gatherers was believed to be in
prehistoric times.

(Joseph George. He holds a BS degree in Mathematics from Carnegie Mellon University in Pittsburgh, Pennsylvania, and a PhD degree in Statistics from the University of North Carolina at Chapel Hill, Chapel Hill, North Carolina. Can America Survive Published 2014)
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