Progress is not linear

Mohenjo-Daro’s advanced plumbing reminds us that progress is not steady or linear. Many people that lived thousands of years later coped with less hygienic conditions.

It was not until the 19th century that urban sanitation became widespread, causing a decrease in water-borne illnesses. While more people now enjoy proper hygiene, far too many people are still living with inadequate sanitation and accompanying diseases.