7/9
Boundaries Breached
Planetary systems
300h
Avg Lead Time
Climate domain
3
Scientists Watched
Rockström, Rahmstorf, Nobre

Active Tipping Points

AMOC Ocean Circulation
Past Recovery
Current: 425ppm CO₂Threshold: 350ppm CO₂
2026 Nature study: if AMOC collapses, it cannot recover at current CO₂ levels. Northwestern Europe temperate climate, African/South American monsoons, and North American sea levels all depend on it.
Amazon Rainforest
Approaching
Current: ~1.35°CThreshold: 1.5°C warming
Tipping threshold revised down to 1.5°C — reachable in 10-15 years. Deforestation disrupts the internal moisture cycle. Collapse would release 150-200Gt carbon.
Coral Reefs
In Tipping Point
Current: ~1.35°CThreshold: 1.0-1.5°C warming
First fully realised climate tipping point per Global Tipping Points Report 2025. We are already in the threshold range. Reefs support 25% of all marine species.
Antarctic Ice Sheet
40% Committed
Current: ~1.35°CThreshold: 2-3°C warming
40% of West Antarctic ice already committed to long-term loss at current warming. Full destabilisation would raise sea levels by several metres.
Planetary Boundaries
7/9 Breached
Current: 7 breachedThreshold: 9 boundaries
Ocean acidification crossed in late 2025. Seven of nine simultaneously breached — the interlocking feedback systems maintaining Earth's stability for 10,000 years are being disabled at once.
2026 Nature Study — Nian, Willeit, Wunderling, Ganopolski, Rockström
If AMOC collapses, it will almost certainly never recover as long as atmospheric CO₂ remains above 350ppm. We are currently at approximately 425ppm. No future decarbonisation programme, carbon drawdown technology, or international agreement could reopen it.
Warming rate has nearly doubled since 2015: 0.35°C/decade vs 0.18°C/decade historically.

Scientific Behavioral Watchlist

Communication pattern spikes from these scientists precede major tipping point studies by 2-4 weeks.

Stefan Rahmstorf
Potsdam Institute for Climate Impact Research
AMOC threshold measurements
Johan Rockström
Stockholm Resilience Centre
Planetary boundary assessments
Carlos Nobre
University of São Paulo / INPE
Amazon tipping point research
UNEP Global Environment Outlook 2026
-22%
Global GDP loss — by 2100 unchecked
$133T
Annual output lost — equivalent

Corporate Filings — Catastrophe Risk Pricing

A separate evidentiary stream from the physical-science sources above. No insurer 10-K uses AMOC/coral/ice-sheet language — what they disclose instead is acute weather and geophysical catastrophe risk, priced via loss experience and probable-maximum-loss (PML) modeling. Presented alongside the tipping-point research, not as confirmation of it.

Chubb: $9.285B modeled 1-in-250-year worldwide net PML (12.6% of equity); $2.921B actual FY2025 net catastrophe losses
10-K, FY2025
Everest Group: $3.083B gross 1-in-500-year Southeast U.S. wind PML; $726M actual FY2025 catastrophe losses
10-K, FY2025
Travelers: $3.690B total FY2025 consolidated catastrophe losses
10-K, FY2025
AIG: $920M total FY2025 catastrophe charges, broken out by peril — wildfire $440M, windstorm/hail $366M, earthquake $41M
10-K, FY2025
Arch Capital: $1.9B modeled 1-in-250-year net PML, Florida Tri-County windstorm peak zone
10-K, FY2025
Munich Re and Swiss Re file neither a 10-K nor a 20-F — only mechanical ADR/13F forms; their catastrophe disclosures live in home-jurisdiction filings outside EDGAR
structural gap, not a search failure

Walk-Forward Backtest — Beyond the Famous Names

A year-by-year, no-lookahead loss-ratio trend, validated against the known 2022-2024 California/Florida homeowners-insurance disruption, then applied to the full SEC-filing insurer population — not just the famous six above — to find who shows the same rising pattern before it becomes a headline. Each candidate below was checked against public coverage before being listed; native facts only, no score.

The six large, diversified insurers above mostly show a DECLINING loss ratio into 2022-2024 (AIG 0.78→0.62, Chubb 0.66→0.52) — diversification dilutes regional catastrophe stress; the famous names are the wrong place to look for this signal
walk-forward, 2007–2025
Mercury General (CA-concentrated auto/home insurer): loss ratio rose 0.71→0.84 (2019–2024); $1.6–2.0B gross wildfire losses (Palisades/Eaton, Jan 2025) — reported only in insurance-trade press, below mainstream-headline salience
10-K history + trade press
Hanover Insurance Group (national multi-line insurer): 2023 was its highest single-year catastrophe loss on record (103.5% combined ratio); Q1 2025 included $35M CA wildfire, Q3 2024 included $40M Hurricane Helene — real, recurring, multi-peril, no single headline ties the pattern together
10-K + earnings releases, 2023–2025

Of six candidates the population scan surfaced, two held up as genuine, verifiable, under-the-radar findings after a self-check; three were false positives from the method's own known limitation (claims/premium ratio can't distinguish catastrophe from ordinary business growth); one (Lemonade) confirmed real wildfire losses but was already prominently headlined elsewhere.

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