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Host Piya Chattopadhyay speaks with The Globe and Mail's Tony Keller about how Canada's desire for immigrants gave way to debate, writer Bill Bryson brings wonder to science in a refresh of his seminal work A Short History of Nearly Everything, former national security analyst and policy advisor Dennis Molinaro explores the complicated history of Canada-China relations, and comedian Charles Demers finds the funny in Canadianisms that define us – from goose poop to butter chicken.

Discover more at https://www.cbc.ca/sunday