This document provides an executive summary of a report on investing in early childhood education for sustainable development. It argues that early childhood education is crucial to prepare young citizens to engage with complex issues and develop scientific literacy. While initiatives like the UN Decade of Education for Sustainable Development recognize the importance of early childhood, progress has been slow. The summary calls for greater investment in early childhood education for sustainable development based on children's rights and its benefits to learning and long-term development. It outlines some existing programs and organizations supporting this area.