One of the speakers at Biofabricate, Larry Weiss - Chief Medical Officer, AOBiome- discussed Microbiome: designing for health. 

He quoted something from Margaret Atwood,

In Spring, at the end of the day, you should smell like dirt.
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I created this piece of work using a risograph machine. Here is what Hato Press (the press that I went to) have to say about the process, 

The Risograph is an environmentally friendly and cost effective printer, which uses soy-based inks to produce unique outcomes. Each stencil (master) is made from thermal sensitive paper and unlike offset printing it only takes a single print for the screen to be fully inked and ready to print thousands of copies. The Risograph is extremely energy efficient and generates a minimal amount of waste. All our stocked papers are recycled or FSC certified.
Image credit: Hato Press

Image credit: Hato Press