British primatologist Dame Jane Goodall, 81, is best known for her long-term research on wild chimpanzees in Tanzania. She founded, the <a href="http://gombechimpanzees.org/" target="_blank" target="_blank">Jane Goodall Institute Research Center</a> in Gombe National Park, which is the world's longest running continuous wildlife research project. She also started Roots & Shoots, the Institute's global environmental and humanitarian program for young people.