Bill Mollison was an Australian ecologist and author, best known for co-founding the concept of permaculture. Born in 1928, he dedicated his life to promoting sustainable agricultural practices that work in harmony with nature. His work emphasized the importance of designing agricultural systems that mimic natural ecosystems, which can lead to increased biodiversity and reduced environmental impact. Mollison's influential book, Permaculture: A Designer's Manual, published in 1988, laid the groundwork for permaculture design principles. He taught numerous courses worldwide, inspiring many to adopt sustainable living practices. His legacy continues through the global permaculture movement, which aims to create resilient and self-sustaining communities.