Early drainage system in China; Iceman Ötzi had dark skin; Medieval girl in England buried face down; Nautilus shell beads in Indonesia
China's ancient water pipe networks show no evidence of centralized state authority
Genome study reveals that Iceman Ötzi had dark skin and male pattern baldness
Medieval girl buried face down, ankles possibly tied, to prevent return from the grave
Sea sequin bling links Indonesian islands' ancient communities