Could you live on only 50 liters (13 gallons) of water a day? To better understand the water shortages threatening more and more cities around the world, host Nelufar Hedayat limits herself to 50 liters of water for all her cooking, cleaning, and drinking. She also talks to people in Cape Town, South Africa, about how they averted Day Zero, the day their water supply was going to run dry. Read the episode transcript here.