In response to scarcity of electricity in Northern Nigeria, one man created a device similar to a refrigerator using two pots. Here's how it works: You take a smaller pot and put it inside a larger pot. Fill the space in between them with wet sand, and cover the top with a wet cloth. As the water evaporates from the sand, it pulls the heat out with it, cooling the inner pot. It's a natural, cheap, easy-to-make refrigerator. The invention keeps food from perishing for up to three weeks.
How will it improve our quality of life?
"Obviously, this has the potential to change their lives. And it already has -- there are more girls attending school, for example, as their families no longer need them to sell food in the market."
Triple Bottom Line Benefits
This simple invention doesn't require electricity, which is better for the health of the environment compared to traditional methods of burning dirty coal to generate electricity. In addition, this device acts to solve societal problems associated with scarcity of electricity. Furthermore, the device is rather simple and seems plausible even for the world's most impoverished. Lastly, the cooling device acts to solve social equity problems by altering traditional gender roles. Instead of having to spend the majority of their time collecting fresh food to prepare, more young women are able to attend school.
Issues, Barriers and Opportunities?
Education, empowerment, and awareness.