Dead guts spill history of extinct microbes: Fecal samples from archeological sites reveal evolution of human gut microbes

Dead guts spill history of extinct microbes: Fecal samples from archeological sites reveal evolution of human gut microbes: Extinct microbes in fecal samples from archaeological sites across the world resemble those found in present-day rural African communities more than they resemble the microbes found in the gut of cosmopolitan US adults, according to new research.