Wangari Maathai (1940-2011) was a Kenyon political and environmental activist and her country's assistant minister of environment, natural resources, and wildlife. In 1971 she became the first woman in either East or Central Africa to earn a doctorate. In 1977, she launched the Green Belt Movement to reforest Kenya while helping women. Women were responsible for the planting of more than 30 million trees. In 2004, she won the Nobel Peace Prize. Learn more at Biography.com.