Host Piya Chattopadhyay speaks with St. Francis Xavier University Research Chair in Canada-U.S. Relations Asa McKercher about what history can teach us about contending with Donald Trump's tariff threat, writer Oliver Burkeman makes his case for embracing imperfection as we embark on a new year, and author Malcolm Gladwell explores the darker sides of social epidemics.

Discover more at cbc.ca/sunday