Maize and wheat yields have decreased an average of 5.8% and 2.3%, respectively, in sub-Saharan Africa due to climate change. Among the 135 million acutely food-insecure people in crisis globally, more than half  are in Africa. This is partly due to the growing severity of drought with increasing temperatures also a severe risk factor. Adding to these challenges, Africa has the fastest-growing population in the world that is projected to grow to around 40% of the world's population by 2100.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report