Former US president Clinton and former South African president Mandela applaud Kenyan environmentalist and Nobel Peace Laureate Maathai in Johannesburg. Former U.S. president Bill Clinton (L) and former South African president Nelson Mandela (C) applaud Kenyan environmentalist and Nobel Peace Laureate Wangari Maathai (R) after she addressed the Nelson Mandela Annual Lecture in Johannesburg, July 19, 2005. Mandela turned 87 on July 18. REUTERS/Mike Hutchings