Kenyan Nobel Peace Prize winner and environmentalist Wangari Maathai has died in hospital, her organisation the Green Belt Movement said.<br/> She was undergoing treatment for cancer.<br/> Maathai rose to international fame for campaigns against government-backed forest clearances in Kenya.<br/> Winner of the 2004 Nobel Prize, she was the founder of Kenya's Green Belt Movement and a civil and women rights activist.<br/> Marie-Claire Fennessy, Reuters
