Climate denialists aren’t the only voice In the GOP — They’re just the loudest,'' Talking Points Memo, 17 September 2019.

Canadians in every riding support climate action, new research shows,” The Conversation, 5 September 2019 (with Erick Lachapelle).

New Brunswick’s timid foray into carbon pricing,” Policy Options, 9 July 2019.

The Green Party wave could spread across Canada,“ The Conversation. 25 April 2019.

The tragedy of the Tragedy of the Commons,” Scientific American. 23 April 2019.

Congress has no clue what Americans want,” New York Times. 31 October 2018 (with Leah Stokes and Alexander Hertel-Fernandez).

No, we didn’t almost solve the climate crisis in the 1980s.” Vox. 6 Aug 2018 (with Leah Stokes).

Ford’s illusory climate policy mandate.” Alternatives Journal. 26 July 2018.

In two graphs, here’s what experts think about whether the U.S. and China can stick to their climate agreements.” Washington Post: Monkey Cage. 14 December 2015 (with Dustin Tingley).

Is lagging on climate change a political liability?” The Conversation. 22 October 2015 (with David Konisky). 

Sad but true: Canada and Mexico have no clout in Washington.” The Globe and Mail. 7 October 2011. (with Stephen Clarkson).