PhysOrg: Agriculture contributes to one-third of Rwanda's gross domestic production and remains the main source of subsistence for the majority of the country's population. Farming employs eight out of ten Rwandans. Despite its importance, the sector remains highly vulnerable to current and projected climate and weather variability. Severe flooding in 2007, for example, caused an estimated US$22 million in two districts alone. Recurrent hail and wind storms, heavy rains and prolonged droughts take frequent...