In the latest edition of our monthly challenge That's Puzzling!, Piya Chattopadhyay competes against one familiar voice and one clever listener in a battle of brain games devised by puzzle master Peter Brown. Playing along this month are Brent Bambury, host of CBC Radio's Day Six, and Truro, N.S. listener Katherine Reed.

Host Piya Chattopadhyay speaks with University of British Columbia professor Lori Daniels about what Canada's early fire activity signals about the wildfire season ahead, nature writer Robert Macfarlane reflects on the push for rivers to be designated as living entities, former National Centre for Truth and Reconciliation director Ry Moran looks at progress made 10 years after the TRC's calls to action, we play an all-new round of our monthly challenge That's Puzzling!, and poet and lecturer Lee Campbell explains how the underground queer slang Polari went mainstream.

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

This past Sunday marked five years since George Floyd's murder by a Minneapolis police officer. His death sparked global outrage and propelled a movement for racial justice. But the anniversary arrives against a backdrop of stalled police reform, and polling that shows the number of Americans who believe an emphasis on racial injustice leads to progress has declined. Selwyn Jones, Floyd's uncle, and Robert Samuels, co-author of the Pulitzer Prize-winning book His Name is George Floyd: One Man's Life and the Struggle for Racial Justice, join Piya Chattopadhyay to reflect on Floyd's legacy, and what a path forward looks like for racial equality.