Source: DTE
Context: Kerala’s Wayanad landslide (July 2024) has been described as a “grey rhino event” by scientists in the report Sliding Earth, Scattered Lives (Sept 2025), highlighting how policymakers ignored years of warnings about ecological fragility and rainfall risks.
About Grey Rhino Event:
What it is?
- A “grey rhino” is a highly probable, high-impact event that is visible and foreseeable but often neglected until it causes catastrophic damage.
- It contrasts with “black swan events” (rare, unpredictable) and focuses on obvious but ignored risks.
Concept Developed by:
- Coined by Michele Wucker, a U.S.-based policy analyst, in her 2016 book The Gray Rhino: How to Recognize and Act on the Obvious Dangers We Ignore.
Key Features:
- Predictable: The risk is known and well-documented (e.g., ESA reports flagged Wayanad slopes as unstable).
- Visible: Early warning signs are apparent (e.g., heavy rainfall exceeding 600 mm in 48 hrs was modeled as a trigger).
- Neglected: Authorities fail to act due to complacency, politics, or economic interests.
- High-Impact: When triggered, it causes large-scale social, economic, and environmental damage.
- Actionable: Unlike black swans, preventive action is possible if timely measures are taken.
Significance:
- Risk Governance: Helps policymakers identify and prioritise visible but under-addressed threats.
- Disaster Preparedness: Promotes proactive planning—early evacuation, strict zoning laws, and eco-sensitive development.
