Let us reflect on the fact that the Nile now only carries 2 billion cubic meters of water per year versus 32 billion a few decades ago. The Jordan has reduced its flow to one tenth of normal and the Indus has also lost 90% of its water. In Italy there are on average about 50% of the water reserves left (especially the scarce alpine mantle which slowly releases the precious water over the warm months).
Water consumption in industrial societies is approximately as follows::
- 50% agriculture;
- 30% industry;
- 20% domestic.
It is clear that if restrictions on consumption are imposed, the first sector to be sacrificed will be agriculture (certainly not industry). This should be a further impetus to urgent preparations for a dry land agriculture. Only if we face an emergency with assets of humus around 5-6% can we be expected to remain productive. Whoever ‘only’ has 2-3% humus (a percentage which in “normal” conditions can be considered “good”) will find it impossible to remain economically productive.