Supposedly, 80% of the land that can be used to grow crops is already in use, and 15% of that land has been damaged by poor agricultural practices. A new...

Supposedly, 80% of the land that can be used to grow crops is already in use, and 15% of that land has been damaged by poor agricultural practices. A new concept in farming is supposed to help feed a bumper harvest of 3 billion new people over the next 50 years. 

Vertical farms, many stories high, will be situated in the heart of the world's urban centers. If successfully implemented, they offer the promise of urban renewal, sustainable production of a safe and varied food supply (year-round crop production). Treehugger comments:

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