Agence France-Presse: On a typical February day in West Africa, Cape Verdeans are taking time to cool down as the island nation is buffeted by a rare unseasonal downpour. For the scientists gathered in the archipelagos capital Praia, however, the rain is a worrying portent of the changing climate to which Africa is becoming increasingly vulnerable. With each new decade the continent is witnessing more droughts, heatwaves and deadly floods like those that overwhelmed Malawi and Mozambique in January, according to experts...