Chris recounts how reading a scientific review paper titled “Has the Earth’s sixth mass extinction already arrived?” shifted his career from domestic animal reproduction research at the University of Florida to wildlife conservation and inspired his podcast, emphasizing that science alone isn’t enough without stories.
Chris explains mass extinctions are rare, only five in ~540 million years, and contrasts past causes (asteroids, volcanism, climate and ocean chemistry shifts) with today’s human-driven “death by a thousand cuts,” including habitat loss and fragmentation, invasive species, overexploitation, pollution, and climate change.
Chris argues extinction today is often subtle but highlights hope through global conservation efforts, citing northern white rhino embryo work, elephant corridor protection, and many individuals dedicating their lives to saving species.
If you enjoy these episodes, you'll love our new Substack.
Each week, I dive deeper into the stories behind the podcast, sharing personal experiences from my years in wildlife conservation, reflections on the science, and the remarkable people working to protect our planet.
Read the latest essays here: https://substack.com/@cmortensen
Timeline
00:00 One Paper Changes Everything
03:17 What Mass Extinction Means
04:20 The Big Five Extinctions
08:08 Humans as a New Force
09:19 Are We in the Sixth
10:10 Background Rate Explained
12:51 Death by Thousand Cuts
15:01 Quiet Losses Up Close
18:23 Why I Stay Optimistic
21:56 Northern White Rhino Lifeline
24:41 Conservation That Cares
28:51 Hope Is Action
32:27 One Story Sparks Change
35:28 Stewards of the Planet
37:12 Final Call to Wonder
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