In 2006, Green Belt Movement began restoring Kenya’s Aberdares after years of human pressure. 18 years later, 3.8 million trees had been planted across 2,000 hectares

The Green Belt Movement rehabilitated Kenya's Aberdares Forest, a vital water source. Illegal logging and cultivation threatened this primary forest ecosystem significantly. The project involved planting millions of trees and raising community awareness. This initiative empowered local populations and diversified their income sources. Wangari Maathai's efforts earned her the Nobel Peace Prize for conservation.