At 91-years-old, Jane Goodall hasn't just seen a lot of change in the world – she's made a lot of change. The legendary naturalist’s field work with chimpanzees transformed how both science and the general public view our fellow primates. In later years, as an activist and conservationist, she’s inspired countless young people to follow her lead and change the world. Today, when political leaders seem to be prioritizing the economy over the environment, Goodall speaks with Piya Chattopadhyay about how to stay hopeful, and to keep on sparking positive change.

Host Piya Chattopadhyay speaks with The Economist’s Rob Russo and The Globe and Mail’s Shannon Proudfoot about Prime Minister Mark Carney's priorities heading into fall, mathematician and educator Eugenia Cheng explains how math can help us better understand the world, legendary activist and conservationist Jane Goodall shares how to stay hopeful amid climate and political instability, and Canadian hip hop icon Shad and Toronto listener Clare Hodge kick off an all-new season of our monthly challenge That's Puzzling!

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

In many ways, personal devices like smartphones, tablets and smartwatches feel less like tools… and more like constant companions. Stephen Monteiro says that’s by design. The assistant professor of communications studies at Concordia University joins David Common to discuss his book Needy Media, in which he breaks down how our devices evolved – from the way they feel in our hands, to how they light up when we look at them – to make us more dependent on them.

Guest host David Common speaks with The Atlantic staff writer Toluse "Tolu" Olorunnipa and New York Times White House correspondent Luke Broadwater about the enduring effects of Donald Trump's whirlwind summer, assistant professor of communications studies at Concordia University Stephen Monteiro breaks down how our devices evolved to make us more dependent on them, science journalist Peter Brannen enriches our understanding of carbon dioxide, and activist Loretta Ross reflects on her social justice journey.

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

Four months since Mark Carney was elected prime minister, journalist Justin Ling is examining the forces that drove – and divided – Canadians during the federal election campaign in his new book, The 51st State Votes. David Common speaks with Ling about the existential crisis Canadians faced at the ballot box in the form of Donald Trump, how it fundamentally shifted the fortunes of Conservative leader Pierre Poilieve, and how all federal parties need to adapt to meet this moment as Parliament gets ready to return.

Guest host David Common speaks with global affairs experts Janice Stein and Roland Paris about how much merit there may be behind the momentum of Russia-Ukraine peace prospects, famine expert Alex de Waal discusses the confirmation of famine in Gaza City, journalist Justin Ling explores how the forces behind the federal election are shaping Canadian politics now, Dr. Chika Stacy Oriuwa shares her journey to becoming a doctor and finding her voice, and music historian Steve Waksman walks through how stadium shows evolved and changed live music.

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

As record temperatures scorch Canada, you may find yourself walking on the shady side of the street, or ducking under a tree. But in many cities, keeping public spaces sunny has long been a key priority. The Globe and Mail's architecture critic Alex Bozikovic explains how sun and shade wars have broader implications on critical city infrastructure. Then, Saroja Coelho speaks with environmental journalist Sam Bloch about how prizing sun over shade has cast a long shadow on urban design and public health in our warming world.

Guest host Saroja Coelho speaks with New York Times White House correspondent Katie Rogers and McGill University political science associate professor Maria Popova about Donald Trump and Vladimir Putin's meeting in Alaska, The Globe and Mail's architecture critic Alex Bozikovic and environmental journalist Sam Bloch make the case for city shade, aviation expert John Gradek discusses the the Air Canada flight attendant contract dispute, Canadian history professor Alan MacEachern reflects on the evolution of Canada's parks, and Canadian author Vinh Nguyen retraces his family’s journey 50 years after the end of the Vietnam War.

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