10 Cases of Appropriate Technology 

hipporoller Water Blog

The Hippo Roller is frequently cited as an example of Appropriate Technology (AP), as is the case in this article. According to Wikipedia AP is “an ideological movement encompassing technological choice and application that is small-scale, decentralized, labor-intensive, energy-efficient, environmentally sound, and locally autonomous.”  It’s worth quoting the full description of the Hippo Roller in this article: “In some African …