Kassaahun Yimer

Revolutionized desertification control through grassroots afforestation in Ethiopia's degraded regions

Kassaahun Yimer (b. 1975) is an environmental pioneer who single-handedly transformed 1,200 hectares of barren land into thriving forest ecosystems in Ethiopia's Afar region. Starting in 1996 with just an axe and a sack, he planted 30 million trees over 25 years in the drought-prone area, creating a biodiversity hotspot now home to 130+ species of birds and 20 mammal species. His 'Green Afar' initiative stopped soil erosion that had displaced thousands of pastoralists, increasing rainfall from 300mm to 600mm annually and restoring groundwater levels.

Yimer's low-cost methods use local materials and traditional knowledge, avoiding expensive irrigation systems. He trains communities in seed collection and nursery management through his Yimer Environmental Organization, which has replicated his model in 12 regions. His 2018 collaboration with UN Environment Programme established the first carbon credit scheme for community-managed forests in Ethiopia.

A documentary by BBC's Africa Have You Heard brought global attention to his work, leading to partnerships with the Ethiopian Wildlife Conservation Authority. His 2020 book The Man Who Planted a Forest chronicles his journey and provides practical guides for community-based reforestation. Yimer's work exemplifies how individual action can combat climate change while empowering local economies through ecotourism and sustainable agroforestry.