S1 Ep98: PREVIEW Janatyn Sayeh highlights the severe, unacceptable air quality and pollution crisis in Tehran, where she grew up. The pollution is described as poison, with carbon dioxide levels repor

PREVIEW Janatyn Sayeh highlights the severe, unacceptable air quality and pollution crisis in Tehran, where she grew up. The pollution is described as poison, with carbon dioxide levels reported to be ten times higher than the World Health Organization's recommended average. The pollution is so severe that schools are sometimes shut down during winter, and residents constantly smell and ingest the high carbon dioxide levels. Guest: Janatyn Sayeh. 18TH CENTURY TEHRAN