Afrique en Ligue: Climate change is causing growing internal population migrations and displacements in Africa, a top official of the United Nations High Commission for Refugees (UNHCR), Chrysantus Ache, said Friday. Ache, the UNHCR representative at the African Union and the Economic Commission for Africa, said more and more people were on the move, escaping climate change-induced disasters such as droughts and flooding. Ache warned, at the Seventh African Development Forum, that the situation would …