All of the above, almost every thought bubble about controls on us all, even who can have children are possible, not supported but possible, it remains my view first man must ask what is the limit to population? all the rest are symptoms of over population, any effort to just feed and house ever increasing numbers must hit a wall one day we all have a budget we can not exceed the world must have one too surely

Canem Malum,
You hit the right nerve when you stated that we don't have the right to tell others what to do or to that effect. Exactly, spo-on ! So, others then don't have the right to force themselves onto us & demand that we feed, clothe & house them .
If we have the stance to discipline ourselves somewhat more than others then the others should only be allowed to watch & learn, not overrun us with their indiscipline.
We have reached the point of where we have every moral & God-given right to say stop it right there. You can see how we do it so now do it too, watch, listen & learn ! No more demanding we give so you don't have to discipline yourself.
We can stimulate our manufacturing economy by providing goods to struggling nations but not a a single Cent of cash. Those migrants who don't actually want to live with & alongside us must be encouraged to apply in their old countries what they have learnt here. Of course that would prevent them from following their insipid orders to force their backward doctrine onto us but hey, that's their problem. It may, with some luck, even make them see their destructive doctrine is only a recipé for human disaster. Our civilisation for want of a better description, has learnt from it's mistakes to a large degree, their doctrine is hellbent on destroying everything that is humane. Our society has more than enough unworthy members who aren't worth sharing the benefits we create, we really don't need more hangers-on especially those who openly pray for our demise.

Individual - Thank you for your feedback. I hope you'll look up the ALT movements.

AC - The Georgia Principles are interesting. Especially the 500 M population limit.

The thing is resources don't run out at the same time.

Someone mentioned Peak Oil - I didn't finish reading this particular document it was about 300 A4 pages long after a while I felt that I had got the point and gave up. I'm sure it has limitations but also many thought provoking points. Our energy up to this point has been reliant on Hydrocarbons (Coal, Oil, Gas) both for transport and electricity. The biggest impediment to changing this to renewables is not "getting the energy" but "storing the energy" - especially in vehicles. Elon Musk has bet on Lithium Batteries - I suspect this is unsustainable - not because there isn't enough supply of lithium but because batteries have a limited life-cycle and are difficult to recycle. Other options are compressed air, fuel cells, springs, hydrogen, etc but Elon Musk has done research on most of these, I trust, and found Lithium Batteries the best option. It's somewhat annoying when people without engineering knowledge talk of its wonders - like engineering miracles pop out of a fantastic Christmas present - and then we can spread the joy around the world. Bringing a new product to market is a soul destroying experience - just ask the Wright Brothers. But still engineers are marvelous...

This is just one of the resource side problems that need to be solved in a world of the current size without considering a larger one. Fresh water is another problem especially in Australia. You can't take water open loop out of the Murray-Darling System and expect this to be sustainable - but this is what we have done - blind to the effects of our population

Aidan,

Source is the journals of the Dutch explorers - mainly Behrens and Roggeveen. They talked of "plantations and fruit-trees", "trees [that] were in full bearing" and " Fields and trees [which] yielded their rich produce". There's little doubt that the island's original palm trees had been destroyed within a century or two of arrival by the introdcued rats but the island remained covered in vegetation, at least in 1722.

AC,

I've no doubt you saw the doco you mention. Your views were the prevailing opinion 2 decades ago but new research has overthrown much of what was 'known'. This is not an unusual process. The traditional way of thinking about the Rapa Nui was unchallenged because it wasn't really of much interest. Then people like Diamond politicise it and use it to inform their agenda. Now its of interest and scientists begin to look at it more carefully only to find the truth is very different to what was believed.

Try this as a starting point if you're interested:

http://www.sbs.com.au/guide/article/2018/02/06/what-really-happened-people-easter-island

blind to the effects of our population, now there is the very heart of why I posted this thread, it is not the numbers that concern/even frighten me, it is the result of those numbers,right now in the African continent war is taking place and thousands die, yes faith has a roll but so too food and water, double the population and it could get even worse

Individual I tried a bore. I went down 190 Ft & got 200 gallons per hour. In the old measurement, it taker 26,000 gallons to put an inch on an acre of land, so 5 days of pumping would supply enough to irrigate one acre.

My next door neighbour had a windmill powered bore near our boundary. He used to get 1100 gallons a day pumped up to the house. After the windmill failed he installed a solar pump. It pumps 550 gallons per day. Great systems for stock & garden water, but no more.

I looked at running mains power down there, 20 years ago. Fortunately the $30,000 cost, [back then], stopped me. My Lucerne growing neighbour has just turned off the mains power for his very serious irrigation, & installed a 110 kilowatt diesel, as it is now too expensive to use mains power to run his pump.

In the last flood my bottom 6 acre of black soil river flat went 18 feet under, & was under for 5 days. Half the property was under for 3 days. This flood killed one neighbours 30 acre Lucerne patch, & 10 acres of anothers turf farm grass. These things don't like being submerged, or waterlogged for that long. I had a 6 horse power pump down at the dam in that paddock disappear, washed away, & lost 800 metres of boundary fence. The neighbour saved his bore pump system, but there is a lot of mud still to get out of his bore.