The natural line of defence: Protecting capital in a changing climate
Climate and biodiversity loss are becoming systemic threats to national security, economic stability and the long-term capital of charities.
- More than 325,000 people had fled wildfires in France and Spain by late July 2026, while 265,457 hectares had burned in Spain by 12 August, over half the EU total for the year.
- A glacial collapse on the Nepal–Tibet border killed more than 390 people, left over 1,400 missing, destroyed at least 19 bridges and damaged nearly 40km of road; Hindu Kush Himalayan glaciers are losing ice 65% faster than at the start of the century.
- The UK imports around 40% of its food, and the Joint Intelligence Committee judges that every critical ecosystem it examined is on a pathway to collapse, with some collapses potentially occurring as soon as 2030.
- Physical shocks can raise inflation and reduce wealth even when reconstruction lifts GDP, while losses spread through infrastructure, insurers, banks, supply chains, public finances and charitable needs.
- Sarasin’s response is to stress-test assumptions, require larger margins of safety, identify resilience-enhancing assets and integrate climate and nature into its Sustainability Impact Matrix, Climate Value at Risk analysis and stewardship.
Takeaway: Investors should treat climate and nature loss as financial, credit and security risks rather than externalities, while recognising that the consequences cannot be forecast precisely; Sarasin applies this approach through its Climate Active Endowments strategy, targeting UK CPI + 4% over rolling 7–10-year periods.