indigo

Indigo Sig Vat

Waste not: Urine – Part 2: The Indigo Sig Vat This post is part of a series exploring the historical and modern applications for human urine.  Part 1 is available here. At the end of the previous post I left off with a short anecdote about how last year I set out to grow my […]

Waste Not Urine

In his posthumously published 1911 work Farmers of Forty Centuries, USDA agronomist F. H. King documents his travels studying the intensive agriculture of China, Korea and Japan.  Multiple references are made to the efforts of farmers and city-dwellers alike to collect and distribute human waste to nearby farms as a valuable source of ongoing fertility: […]