A Soweto, South Africa, customer of Wonderbag, a heat-retention device that continues to cook food after it's removed from the stove, saving users water, fuel, and time. The company says that when scaled up globally, the product will reduce carbon emissions, deforestation, and indoor air pollution, and improve the lives of girls in developing countries, who are often pulled out of school to forage for wood. This summer, students from the Berkeley Master of Development Practice researched the company's potential.

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Photo by Mark Lanning

A Soweto, South Africa, customer of Wonderbag, a heat-retention device that continues to cook food after it's removed from the stove, saving users water, fuel, and time. The company says that when scaled up globally, the product will reduce carbon emissions, deforestation, and indoor air pollution, and improve the lives of girls in developing countries, who are often pulled out of school to forage for wood. This summer, students from the Berkeley Master of Development Practice researched the company's potential. See On the Ground.

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