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September 26, 2025 24 mins
In the 1930s, wolves were eradicated from Yellowstone National Park…and then the entire ecosystem went haywire. In this episode of This Is Wild, we explore the power of apex predators to impact their environments, both culturally and ecologically. From the ripple effects wolves had on rivers and forests to the deep cultural connections between people and these oft-misunderstood animals, we’ll uncover how their presence (or absence) can shape entire landscapes. To learn more about grey wolves and Algonquin wolves, you can go to www.wwf.ca/thisiswild. If you have any questions or suggestions for the show, you can email us at thisiswild@wwfcanada.org.
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Cardiac Cowboys

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The heart was always off-limits to surgeons. Cutting into it spelled instant death for the patient. That is, until a ragtag group of doctors scattered across the Midwest and Texas decided to throw out the rule book. Working in makeshift laboratories and home garages, using medical devices made from scavenged machine parts and beer tubes, these men and women invented the field of open heart surgery. Odds are, someone you know is alive because of them. So why has history left them behind? Presented by Chris Pine, CARDIAC COWBOYS tells the gripping true story behind the birth of heart surgery, and the young, Greatest Generation doctors who made it happen. For years, they competed and feuded, racing to be the first, the best, and the most prolific. Some appeared on the cover of Time Magazine, operated on kings and advised presidents. Others ended up disgraced, penniless, and convicted of felonies. Together, they ignited a revolution in medicine, and changed the world.

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