For vulnerable countries, climate adaptation is no longer an option—it is a necessity. A unique opportunity for philanthropiesPhilanthropies are learning more about climate adaptation and resilience. Key opportunities for higher-impact givingPhilanthropic organizations can pursue many avenues for contributions to climate adaptation, from local community projects to broader sectoral or global initiatives. Here we dive into five avenues for philanthropy to work proactively and innovatively with partners to scale up concessional climate financing. 1.Co-finance projects with multilateral development banksPhilanthropic organizations and MDBs can jointly finance climate adaptation, nature restoration, and resilience-building projects—particularly in low-income, climate-vulnerable countries.