A Cool Way to Keep Food From Spoiling
30 июля 2013

A Cool Way to Keep Food From Spoiling

A Cool Way to Keep Food From Spoiling
This is the VOA Special English Technology Report, from voaspecialenglish.com | facebook.com/voalearningenglish A few degrees can make a big difference when it comes to food storage. Foods can go bad if they get too warm. But for many of the world's poor, finding a good way to keep food cool is difficult. Refrigerators are costly and they need electricity. Yet spoiled food not only creates health risks but also economic losses. Farmers lose money when they have to throw away products that they cannot sell quickly.But in nineteen ninety-five a teacher in northern Nigeria named Mohammed Bah Abba found a solution. He developed the "Pot-in-Pot Preservation/Cooling System." It uses two round containers made of clay. A smaller pot is placed inside a larger one. The space between the two pots is filled with wet sand. The inner pot can be filled with fruit, vegetables or drinks. A wet cloth covers the whole cooling system. Food stored in the smaller pot is kept from spoiling through a simple evaporation process. Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving. The evaporation process creates a drop in temperature of several degrees. This cools the inner pot and helps keep food safe from harmful bacteria. Some foods can be kept fresh this way for several weeks.People throughout Nigeria began using the invention. And it became popular with farmers in other African countries. Mohammed Bah Abba personally financed the first five thousand pot-in-pot systems for his own community and five villages nearby. In two thousand, the Rolex Watch Company of Switzerland honored him with the Rolex Award for Enterprise. This award recognizes people trying to develop projects aimed at improving human knowledge and well-being. A committee considers projects in science and medicine, technology, exploration and discovery, the environment and cultural history. Winners receive financial assistance to help develop and extend their projects. The awards are given every two years. The next awards will be presented in late two thousand twelve. Last year, Rolex launched the Young Laureates Program for the younger generation. For VOA Special English, I'm Carolyn Presutti. We have more programs at voaspecialenglish.com, where people can read, listen and learn English with texts, MP3s and activities. We also offer English lessons at the VOA Learning English page on Facebook. (Adapted from a radio program broadcast 28Nov2011)
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#1 написал: John Staemos (1 августа 2013 13:22)
If? you dont have a fridge im sure you wouldnt have internet or electricity:(
#2 написал: yaser pirhayati (1 августа 2013 13:22)
#3 написал: Cosimo Aprile (1 августа 2013 13:22)
Thank you a lot? for all you do for us . Your service is priceless.
#4 написал: Rafael T (1 августа 2013 13:22)
amazing, VOA is a delicious project that help a lot of people around the world in their english skills... thank you a lot guys, i'm from brazil and? my listening in english is getting better and better cause i'm listening a real native american talking, with no formal english but the every day real english speaking. Happy new year guys, and thank you once again!
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