At 7 kilocalories of food per litre of water, iAVs tomatoes and tilapia are 4,000 to 7,000 times more water-efficient than is high-yield corn grown in Iowa (‘not to mention’ the soil loss, energy, Carbon emissions, herbicides and other pollutants flowing down stream).
And, iAVs is 20,000 times more efficient in terms of water consumed per food value produced than is corn grown in SE Missouri – albeit likely destined for combustion in a SUV engine as mandated ethanol-blended gasoline. Effectively, in the US, we’ll burn absolutely anything, including our food and remaining water resources, just to ‘save’ a few cents on fuel as we drive to Walmart and keep the factories in China pumping Carbon from Australian coal into Earth’s atmosphere.
And why is this important?
The global water situation is dire – far more dire and imminently catastrophic than most people can comprehend. And, it’s getting exponentially worse by the hour.
Globally, two billion (or more) people are currently under severe water stress – and, it’s never going to improve even without the ongoing addition of 230,000 future parched throats and desperate mouths added each and every day (2015).
Globally, industrial agriculture is in deep trouble.
Food production is threatened on every conceivable front.
There’s exponential soil loss, aquifer depletion, extreme droughts and floods, die-offs of bees and other pollinators, mineral (nutrient) constraints, ground and surface water contamination, desertification, increasingly frequent and severe extreme weather events, fossil energy depletion/dependence and exponential mass extinction in every critical trophic level (aspect, component) of the biosphere.
All of these constraints and impacts are set against a rapidly rising human population – long ago in overshoot – and mass extinctions of virtually all non-human life. Humans are a (rapacious) subset of the biosphere/ global environment aka ‘web of life’, NOT the reverse … as so-called ‘civilization’ obviously ‘thinks’ (acts). IMO, humans are now the evolutionary/planetary equivalent of full-spectrum cancer. For those who may not have heard/noticed, cancer kills its host … if fact, this is what imparts/conveys its literal existence.
How come I’m 65% water but only 2% interested?
Its impossible to worry about anything else without continual access to potable water – everyone, each and everyday.
“The U.N. also [conservatively] estimates that the world will face a 40 percent shortfall in the global water supply by 2030 unless dramatic steps are taken to improve the management of water. Within a decade, 1.8 billion people are projected to be coping with severe water scarcity and two-thirds of the global population could be living with stressed water supplies.”