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Touch the Soil News #859 (Feature photo – Spirulina – CCA SA 3.0 Unported) Spirulina – or fast growing algae – seems to be popping up more frequently (see Touch the Soil news piece # 852). In the mega-metro of Bangkok (Thailand) some 15 million people are crowded around hundreds of square miles of buildings. The logistics of growing and getting food into a city like this is enormous. A newer agricultural startup called EnerGaia is now looking at all of the rooftop space in this city to grow spirulina – one of Earth’s oldest life forms. Spirulina is a fast growing blue-green algae with an estimated protein content of…

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