Rank #20 ITN Score: 20/30

Biodiversity Loss & Ecosystem Collapse

Species are going extinct 1,000× faster than background rates due to habitat destruction, pollution, invasive species, and climate change. Ecosystem collapse threatens agricultural stability, water systems, and the natural systems that support all life.

Key Statistic

The sixth mass extinction is underway: vertebrate populations have declined by an average of 69% since 1970, per WWF Living Planet Report.

ITN Assessment

Importance8/10

Scale & severity

Tractability6/10

Ease of progress

Neglectedness6/10

Lack of attention

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Why This Matters

High importance for planetary stability; tractable via habitat protection and restoration; less neglected than some causes but severely underfunded relative to the scale of loss.

Key Organizations

Island Conservation
Prevents extinctions by removing invasive species on islands; near-perfect success rate.
Conservation International
Protects critical ecosystems and biodiversity hotspots globally.
WWF (World Wildlife Fund)
Largest conservation NGO, with programs on habitat, species, and policy.
The Nature Conservancy
Science-based conservation of land and water globally.
IUCN
Maintains the Red List and sets international conservation standards and policy.

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The Sixth Mass Extinction: Why Biodiversity Loss Is a Civilizational Riskv1Accepted

WorldProblems Solved

Species are going extinct at 100–1,000 times the natural background rate due to habitat destruction, invasive species, overexploitation, pollution, and climate change. The resulting collapse of ecosystems threatens the natural systems that underpin agriculture, water, medicine, and climate stability. This founding report examines the drivers and consequences of biodiversity loss, evaluates the evidence for effective conservation and restoration interventions, and argues for a reframing of biodiversity as a systemic risk to human civilization — not merely an aesthetic or sentimental concern.

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Evidence & References

80,000 Hours Problem Profile

https://80000hours.org/problem-profiles/

Problem Profile

Why Pressing

Species are going extinct at 100–1,000 times the natural background rate — the fastest since the asteroid that killed the dinosaurs. Vertebrate populations have declined 69% since 1970. This is not merely a sentimental concern about wildlife: biodiversity collapse threatens the functional stability of ecosystems that support agricultural pollination, water purification, climate regulation, and natural disease control. The 2022 Kunming-Montreal Global Biodiversity Framework committed 190+ nations to protecting 30% of land and ocean by 2030, but funding for implementation falls far short. Targeted conservation investments — particularly invasive species eradication on islands — achieve some of the highest cost-per-extinction-prevented ratios of any philanthropic opportunity.

Scale

44,000+ species are currently threatened with extinction on the IUCN Red List — 28% of all assessed species. Vertebrate populations have declined 69% on average since 1970 (WWF). Freshwater biodiversity has declined 83%. Insect populations have fallen 40–50% globally, threatening pollination for 75% of crop species by value. Coral reefs — supporting 25% of all marine species and food security for 1 billion people — face 70–90% degradation at 1.5°C of warming. The Amazon is approaching a dieback tipping point beyond which much of it could convert from rainforest to savanna, releasing vast carbon stores and collapsing the world's greatest terrestrial biodiversity zone.

Neglectedness

Global biodiversity funding is approximately $22 billion per year — under 0.03% of global GDP — against a Nature Finance gap estimated at $700+ billion annually. Most funding comes from governments with weak accountability for outcomes. Philanthropic funding with rigorous impact measurement is a small fraction of the total, and the highest-returning niche — island invasive species eradication — receives under $50 million per year despite achieving near-perfect success rates at documented costs of $50,000–$500,000 per island.

Tractability

Conservation has high tractability in specific niches. Invasive species eradication on islands has a near-perfect success rate; Island Conservation estimates protecting 1 million species at risk per $1 billion invested. Protected area expansion with strong management demonstrably reduces extinction risk. Ecosystem restoration — particularly tropical forests, mangroves, and wetlands — delivers carbon, water, and biodiversity co-benefits at manageable cost. The tractability is lower for addressing systemic drivers like habitat destruction and climate change, which require broader policy change.