>A massive 5,000-year-old metropolis that housed some 6,000 residents That's 1.2 ancient denizens per student. The size of the research is nearing the size of

>A massive 5,000-year-old metropolis that housed some 6,000 residents That's 1.2 ancient denizens per student. The size of the research is nearing the size of the ancient city.