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You can live without electricity, but not water or food. A crop of new companies are trying to take the chemistry out of agriculture and eliminate crop pests and microbes the natural way.
Australian company Ioteq says the iodine in its Isan system will kill bacteria better than chlorine or ozone will--and it won't cost more.
Fruits and vegetables get stressed by too much sun, too--but spraying a calcium carbonate powder on them can help.