Big Ideas Heart-to-heart with John Wamsley and David Lindenmayer — why these trailblazing environmentalists won't back off
Sep 9, 2025
In this insightful discussion, David Lindenmayer, a Professor of Ecology and Conservation Biology, and John Wamsley, founder of Australia's first wildlife sanctuary, explore the dire state of Australia's biodiversity. They tackle the alarming species extinction trends and the need for innovative conservation strategies. The duo shares inspiring community stories and highlights the impact of sustainable funding and technology in forest management. Their personal journeys reflect a commitment to positive change, urging listeners to take meaningful action for the environment.
AI Snips
Chapters
Books
Transcript
Episode notes
Alarming Trajectory Of Species Decline
- Threatened species have steadily increased since the 1830s and are doubling roughly every 22 years in Australia.
- If trends continue, John Wamsley warns every Australian species could be threatened by 2050.
Cat Hat That Changed Policy
- John Wamsley wore a feral cat pelt as a hat at a public awards night to shock public and politicians into action.
- That publicity helped place nature on the political agenda and contributed to endangered species laws in the early 1990s.
Stopping Native Logging Has Multiple Wins
- Exiting native forest logging reduces taxpayer losses, stores more carbon, and aids biodiversity recovery if managed scientifically.
- Logged and regrown forests are often more flammable and need active restoration, pest control and people on country to recover.
