Originally Posted by StAnastasia
(1)Shale oil and tar sands are far more energy costly to produce than pumping light sweet crude. When it costs a barrel of energy in to get a barrel of energy out, it will no longer be worth working these marginal resources.
(2) Much of the fossil fuel energy input is in the form of fertilizer, rather than tractor fuel. We'll need an alternative to natural-gas derived fertilizers.
(3) The danger point is between now, when oil is peaking, and "way out there" when we might have alternative fuels. We are playing Russian roulette with future generations by continuing our population growth now. And perhaps Russian roulette is not immoral................
Fuel and grain production are only two of the grim realities facing a burgeoning population.
Add to these:
1) No more arable land. The vast majority of the arable land available on earth is already under cultivation.
2) We're running out of water--any kind of water, potable and non-potable.