Micro-credit! Grameen Bank started by Mohd Yunus is an amazing concept.
Ushahidi (www.ushahidi.com/about-us-) a crowdsourcing tool originally used to map incidents of violence following Kenya's 2007 elections. Since then it's been applied in Haiti, Japan - following the earthquakes, Chile, DR of Congo, Gulf coast following the 2010 oil spill etc.Erik Hersman a co-founder of Ushahidi runs a website that keeps up with African Innovations: http://whiteafrican.com/
An idea that did not originate in the west… Cooperative Water Management. Utilizing consensus and grassroots efforts to equitably manage water.
Here's a brand new idea (nothing to do with water though) :-)http://www.hindustantimes.com/India-news/NewDelhi/Tihar-inmates-record-music-album/Article1-989819.aspx
Here's one: http://www.ted.com/talks/ludwick_marishane_a_bath_without_water.html
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