There are many, many different technological/social changes that show promise at combating the threats of peak oil, global warming, water depletion, and famine. Feel-good environmentalism & the status quo is not good enough anymore; Our own future is at stake - not our childrens'/grandchildrens'.. Drastic action is required to figure out which steps we can take that actually work, and implement them yesterday.
This is not one of them. It's a childish fantasy dreamed up by someone who can't get his head out of Manhattan or his backside out of suburbia, who thinks that electricity, topsoil, water, and machinery are 'free' in comparison to the amount of land available.
The food produced in this manner would be hundreds of times more expensive than current crops in ideal conditions at today's energy prices, not to even mention tomorrow's. One tower might cost twenty million dollars and replace twenty thousand dollars of rural acreage, while consuming more than the annual crop is worth every single week in energy bills.
If you'd like to see the kind of prices total indoor cultivation creates, it does exist. Ask a cannabis-grower what his energy bill is like, and how much he wishes he could grow outside with direct sunlight. Currently, cannabis sells for about three thousand times what corn flour does. Outdoors, this stuff grows as a weed.
Copious direct sunlight: Humans don't need it for survival. Crops do. Stacking the humans or their transportation is much easier than stacking the crops.




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Posted May 29, 2008 | 06:13 PM (EST)