We can’t stop shopping. And yet we must. This is the consumer dilemma that noted author J.B. MacKinnon is addressing in this special Department of Writing Orion Lecture. The author of five books of nonfiction, MacKinnon is also an award-winning journalist whose work has appeared in The New Yorker, National Geographic and Atlantic, as well as the Best American Science and Nature Writing. His previous works are “The Once and Future World”, a bestseller about rewilding the natural world; “The 100-Mile Diet” (with Alisa Smith), widely recognized as a catalyst of the local foods movement; “I Live Here” (with Mia Kirshner and artists Michael Simons and Paul Shoebridge), about displaced people; and “Dead Man in Paradise”, the story of a priest assassinated in the Dominican Republic, which won Canada’s highest prize for literary nonfiction.