* The End of Ice: Bearing Witness and Finding Meaning in the Arctic (2019)
* Field Notes from a Catastrophe: Man, Nature, and Climate Change (2018)
* After the Ice: Life, Death, and New Beginnings in Antarctica (2012)
* Beyond the Boom: Canada's Future and the Challenge of Sustainability (2008)
* Gone: The Last Days of the North American Caribou (2007)
* Beyond Climate Gridlock: Getting from Talk to Action on Climate Change (2006)
* Northern Exposures: Searching for the Arctic Frontier (2004)
* No Fixed Address: A Global View of Homelessness (1999)
* Canada's Wild Coast: A Journey on The Queen Charlotte Islands (1997)
Articles and Essays
* "The Arctic Melts, and So Does Our Humanity" (The New York Times, August 2019)
* "We Are Witnesses: Facing the Devastating Consequences of Climate Change" (The New York Times, February 2019)
* "The Last Chance: How to Stop Climate Change" (Rolling Stone, August 2018)
* "The Real Story of the Polar Vortex: How Climate Change Is Making Extreme Weather More Common" (The New Republic, January 2018)
* "How the Far Right Is Weaponizing Climate Change" (The Atlantic, November 2017)
* "The Age of Extinction: How We Are Driving the Sixth Mass Extinction" (The Walrus, May 2017)
* "The New Arctic: A World Transformed by Climate Change" (National Geographic, December 2016)
* "The Case for Climate Action: Why We Must Act Now to Stop Climate Change" (The New York Times, October 2016)
* "The Perils of Climate Denial: How the Fossil Fuel Industry Is Spreading Disinformation About Climate Change" (The Guardian, July 2016)
* "The Fight for the Future: How We Can Win the Battle Against Climate Change" (The New York Times, April 2016)