verified investigationThe Economics of Excrement: From Guano Wars to FMT Startups3 March 2026·Updated: 7 September 2026·1611 words·8 minsInvestigation Scatology Economics Guano Ambergris Kopi-Luwak Coprolite Fmt BiotechEconomic history of feces: guano as casus belli, ambergris, kopi luwak, coprolites, FMT industry.