IUCN and the Global Environment Facility invite proposals from civil society organizations to scale or replicate proven environmental solutions in Africa, Latin America and the Caribbean, and Asia-Pacific and Oceania, with grants up to US$300 thousand. Applicants must be legally registered CSOs based in a GEF-eligible country, working in one of five priority areas: threatened ecosystems and species, sustainable agriculture and food security, low-carbon energy, chemicals and waste, or sustainable urban solutions. The deadline is 15 September 2026. CSO Challenge