The Myth of Environmental Tipping Points
From Sanity Check by Cornwall Alliance for the Stewardship of Creation
April 24, 2026 · 11 min
About this episode
Dr. David R. Legates examines the planetary boundaries model and its implications for environmental science and policy.
The concept of “planetary boundaries” has become one of the most influential frameworks in modern environmental science—shaping global policy, corporate behavior, and public perception. But how solid is it, really? In this episode of Sanity Check, Dr. David R. Legates examines the origins of the planetary boundaries model and walks through each of its ten proposed limits—from climate change and biodiversity loss to ocean chemistry and chemical pollution. Along the way, he raises critica...
People in this episode
Guest: Dr. David R. Legates
Topics covered
- environmental science
- planetary boundaries
- climate change
- biodiversity
- ocean chemistry
- chemical pollution
Keywords
- planetary boundaries
- environmental policy
- climate change
- biodiversity loss
- ocean chemistry
- chemical pollution
Mentioned in this episode
Organizations: Cornwall Alliance for the Stewardship of Creation
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