Christian Science Monitor: In 1977, Kenyan Activist Wangari Maathai founded the Green Belt Movement. The nonprofit’s mission: to halt deforestation, soil erosion, and desertification by planting trees. Ms. Maathai, who holds degrees in biological sciences and anatomy and is a former member of Kenya’s parliament, became the first African woman to win the Nobel Peace Prize in 2004. To date, the Green Belt Movement has planted more than 30 million trees. Maathai has also campaigned for the Congo Forest Basin …