I’m heading off on Friday to Chicago, where I’ll join Bill McKibben, E. L. Doctorow, Terry Tempest Williams, Diane Ackerman, Lawrence Weschler and dozens of other leading thinkers and scientists at the annual Chicago Humanities Festival. The Festival is a city-wide event of readings, lectures, panel discussions, performances that focus on a different theme each year. This year’s theme is global climate change, under the title, “Climate of Concern.” (Last year’s theme was the war in Iraq.) You can read all about it at the Festival’s website. And if you are in or near Chicago, I invite you to come and join the conversation. I’ll be moderating two panels, both on Saturday, Nov 3.