Mireille Mbouaki farms in the village of Mboubissi, sixty kilometres southeast of Pointe-Noire, capital city of the Congolese department of Kouilou. This year the rains have been poor and irregular. Ms. Mbouaki is very worried. She has good reason to worry. In many coastal towns, cassava plants are suffering. Leaves are wrinkled and shriveled, plants are stunted, and roots are rotting. The changing climate has not been kind to Congolese farmers.