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