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That giant sphere in Comcast’s new tower? Watch a futuristic...
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May 20, · The film, which revolves around the theme of ideas that shape the world, talks about projects that helped poor or sick people improve their lives. One short segment is on the Hippo Roller, developed in the early 1990s by South Africans Johan Jonker and Pettie Petzer, to transport water from wells without spills in Africa.
Revolutionary barrels improve the lives of villagers worldwide ...www.inspiraction.news › › revolutionary-b...
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The inventors of this concept are two South Africans, Pettie Petzer and Johan Jonker. The Q Drum has also been created in South Africa.
The Most Delicate Technology: Appropriate Technology - THE SUNGKYUN...
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The Hippo Water Roller was invented in by two South Africans, Pettie Petzer and Johan Jonker. They both had experienced the effect of the water crisis during their lives in rural communities, where access to water is a daily struggle for millions of people. The inventors' mission was to improve the water access of the ...
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