Catholic environmental activists in Africa mounted cleanup efforts and educational programs during World Environment Day. Alongside grazing African buffaloes, activists cleared debris and unwanted plants in Nairobi National Park and nearby Mbagathi River. In Kenya, they partnered with organizations involved in recycling waste to create reusable products. The Zambia chapter organized television shows on environmental protection. In Burundi, activists joined Caritas Burundi and Catholic bishops to clean parishes. In Uganda, activists and conservationists continued a campaign to stop the 900-mile East African Crude Oil pipeline. "The week is a call on all of us to clean the Mother Earth, to clean our minds, to clean our actions so that everything we have is in line with what God asks us," said Papa Prince, program manager for the Laudato Si' Movement in Africa. Days earlier, Catholics worldwide observed Laudato Si' Week, seven years after Pope Francis' encyclical on the environment and human development.