This document summarizes a presentation on climate change, agro-biodiversity, and food security in West Africa. It discusses the environmental challenges facing the region, including decreasing rainfall and increasing temperatures from south to north. It outlines the potential impacts of climate change on biodiversity, such as species loss and reduced crop yields. Two climate change scenarios for 2050 are presented based on different climate models, both showing declining rainfall along coastal areas and potential yield increases or decreases depending on the crop and location. The presentation concludes with an overview of agricultural research in the region conducted by CORAF/WECARD to promote sub-regional cooperation and solve common agricultural problems through research programs focused on key sub-sectors and cross-cutting issues like