I do not acknowledge fresh water as ever being depleted. This planet is covered with water. The idea that it will somehow disappear is absurd.Fresh water and petroleum are crucial to current food production, right? Do you acknowledge that both of those are being depleted?
No I don’t. The issue is one of greed and sin, not overpopulation.So since we can’t claim science will improve the outcome, you need to explain how we’re going to double food production in 70 years. You must take into account the fact that how much you increase production is limited by petroleum and fresh water supplies. Of course, you also need to remember that desertification in Africa and soil depletion in slash-and-burn areas are creating greater problems everyday.
The resources to grow the food necessary are there even now. It is the distribution that has always presented the problem.