Related by context. Frequent words. (Click for all words.) 77 Maathai 61 Belt Movement 54 Jane Goodall 51 Nobel Peace Laureate 50 Nobel Laureate 48 Nobel Peace Prize 48 Bill McKibben 47 Archbishop Desmond Tutu 46 environmentalist 46 Nadine Gordimer 46 Desmond Tutu 45 Nobel peace 45 Archbishop Tutu 45 Muhammad Yunus 45 Kofi Annan 44 Nobel laureate 44 Peace Prize 44 Shirin Ebadi 43 Norman Borlaug 43 Joaquim Chissano 43 Nobel Peace 43 Wole Soyinka 43 Nobel Peace Prize laureate 43 Nobel Prize 42 Nobel prize 42 Barbara Kingsolver 42 Maya Angelou 42 Al Gore 42 Ellen Johnson Sirleaf 41 Jeffrey Sachs 41 laureates 41 President Benjamin Mkapa 41 Doris Lessing 41 Chinua Achebe 41 Borlaug 41 Nobel Peace Prize laureates 40 Program UNEP 40 Environment Programme 40 UNEP 40 Earthwatch 40 Mo Ibrahim 40 Graca Machel 40 Anita Roddick 40 Wendell Berry 40 Prize laureate 40 JM Coetzee 39 Arundhati Roy 39 Michael Pollan 39 President Mwai Kibaki 39 conservationist 39 Vaclav Havel 39 Prime Minister Meles Zenawi 39 documentary An Inconvenient 39 An Inconvenient Truth 39 UNEP Executive 39 Gaylord Nelson 39 Silent Spring 39 Nicholas Kristof 39 President Tarja Halonen 39 Tibaijuka 39 Achim Steiner 39 Prime Minister Raila Odinga 38 honorary degrees 38 Nobel Literature 38 Sustainable Development 38 environmental sustainability 38 Tutu 38 climate change 38 Jendayi Frazer 38 Angelique Kidjo 38 Gro Harlem Brundtland 38 Martti Ahtisaari 38 Ban Ki Moon 38 PeaceJam 38 laureate 38 Amartya Sen 38 Chissano 38 Margaret Atwood 38 MacArthur genius 38 Toni Morrison 37 Sakharov Prize 37 Annie Lennox 37 UN Special Envoy 37 honorary doctorates 37 Skoll 37 Gloria Steinem 37 Mwai Kibaki 37 Kalonzo Musyoka 37 Inconvenient Truth 37 Millennium Development Goals 37 Environmentalist 37 Climate Change 37 Wright Edelman 37 TreeHugger 37 Seventh Generation 37 U2 frontman 37 Machel 36 Nobel Prize laureate 36 Aldo Leopold 36 Jhumpa Lahiri 36 Environment Programme UNEP