The Broca Divide

SG-1 travels to P3X-797, a planet divided into 'Light' and 'Dark' sides. While the inhabitants of the light side have a Bronze Age culture bearing similarities to the Minoan civilization, the dark side is infected with a plague that turns people into savages, and the SGC is locked down when SG-1 brings it home. Dr. Janet Fraiser manages to find a cure for both peoples.