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Amy Hill's profile photoTom Stevens's profile photo
 
See my post on Al Gore's talk page just below yours for my answer to your concerns.  Aquaponics has fish in the bottom tray, hydroponic veggies in the middle one, & plants in earth on top.  This, along with an electrolyzer to give fuel, means no electric bill, no heat bill, no food costs, no vehicle fuel costs.  All for far less water than we are using now.  This water comes from rain & recycled filtered & distilled water that we throw away.
 
That is awesome +Tom Stevens!

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