Original broadcast date: November 13, 2020. Cities are never static; they can transform in months, years, or centuries. This hour, TED speakers explore how today's cities are informed by the past, and how they'll need to evolve for the future. Guests include archaeologist Alyssa Loorya, architects Marwa Al-Sabouni and Rahul Mehrotra, and landscape architect Kotchakorn Voraakhom.