verified investigation The Economics of Excrement: From Guano Wars to FMT Startups 3 March 2026·1611 words·8 mins Investigation Scatology Economics Guano Ambergris Kopi-Luwak Coprolite Fmt Biotech Economic history of feces: guano as casus belli, ambergris, kopi luwak, coprolites, FMT industry.