For developing countries without the means to store life-saving vaccines, solar refrigerators may be the answer.
"Solar refrigerators" may help fight disease in third world countries if prototypes now being developed for the National Aeronautics and Space Administration prove to be economically feasible. According to the World Health Organization, more than five million youngsters in underdeveloped nations die each year of childhood illnesses (measles, diphtheria, whooping cough, etc.) that can be prevented with immunizing vaccines. The medicines, however, are sensitive to heat and must be refrigerated. Conventional coolers (including kerosene-driven units) are impractical for such purposes in many regions, so researchers are hoping that photovoltaic-powered units can be utilized to solve the problem.
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