In many semi-arid regions (in West Africa between 12-19oN, more than 2,000,000 km2) the ecology does not sustainably support a population density greater than a few hundred persons per 100 km2.Many of these persons live in small villages nearby a wadi (a mostly dry riverbed) or move with their roaming herds.If, for a non-ecological reason, the population density is suddenly increased, three of the essential human needs: water, food, energy for cooking, notably wood, may not be satisfied.In these regions solar energy is often abundant.Moreover, it is equitably distributed, free of charge, and delivered to the "homestead".Its use can eliminate a very common reason for conflict, and contribute to a sense of justice, and peace.All that is needed is a simple, affordable, relatively easy-to-maintain way to capture this energy.Its use and cost must be such as to eliminate any reason for jealousy.It must be practicable even in regions of severe armed conflict.While the method proposed relies on basic physics, for its daily use only common sense is needed, as proven by the women, men and children using it.The equipment described fulfills this role, provided a relatively short and simple training in its manufacture and use is given.The most important requirement for 100% effectiveness for cooking, is that manufacture and use must follow the instructions for 100% (hence the local Arabic expression "mia/mia").This communication describes how the technique was adopted by tens of thousands of families, and now provides cooked meals for more than 100,000 persons, 300 or more days per year, frequently even twice daily.Many more refugees and civilians in the area wish to be trained and equipped in the coming months and years.SolarCooking gives women free time for their education, families and household work.It promotes cooking in clean air.It pasteurizes water for the babies.It eliminates risk of fire and burns.It is easy for the disabled.Etc.It also brought some peace.