Are 'plant factories' viable greenhouse alternatives:The answer may lie in analysis of carbon footprints energy sources, and costs

摘要

Multilayer and multistory greenhouses. Abandoned warehouses. Modular, specially outfitted shipping containers. What do these have in common? Each has been promoted as an alternative to traditional greenhouses in urban setting.These systems share one unfortunate characteristic: each is based on limited or no access to natural light (sunlight). This