An interesting podcast interview with Steven Cohen discussing how big cities are leading the way to a more sustainable planet from Wharton. Read the whole transcript here.

A quick scan of the headlines paints a bleak picture of the environment. Oceans are filling with plastic, aging cities are grappling with failing infrastructure, and air pollution is blackening the skies. But there is hope. Steven Cohen, public affairs professor at Columbia University and senior adviser at the school’s Earth Institute, believes big cities are leading the way to a more sustainable planet by making innovative changes. His book, The Sustainable City, takes a public policy perspective on fixing the planet. He spoke on the Knowledge@Wharton show, which airs on SiriusXM channel 111, about how to make sustainability a reality.