by Laurent Lozano Agence France-Presse SAINT-LOUIS, Senegal (AFP) – In the northern Senegalese city of Saint-Louis, excavators are ripping up the beach to lay giant blocks of basalt, in an eleventh-hour effort to keep the sea at bay. When work is finished, a black sea wall will stretch for kilometres along the coastline of the West African country’s former capital, famed for its colonial-era architecture. Dire warnings about the risk of rising sea levels due […]