Which product innovation was specifically designed for rural areas in Africa where electricity is scarce, creating a refrigeration solution that operates without electrical power?

Test your knowledge about how product innovations have been specifically designed to address geographical challenges around the world! Many products we take for granted were actually created to solve problems unique to certain regions or environments. From extreme weather conditions to geographic isolation, these product innovations have made life better for people in specific locations. How well do you know these geography-inspired product designs?

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The Pot-in-Pot Refrigerator (Zeer pot), which uses evaporative cooling with two earthenware pots, sand, and water
The Solar Backpack, which collects energy during daytime walks to power small appliances
The Gravity Light, which generates light from the gravitational energy of falling sand
The BioLite Stove, which converts cooking heat into electrical energy for refrigeration