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Sonia commented on African Leadership University

Hi Kate!
The founder of ALU is an alumnus of Stanford - he received his MBA here. There are also a number of former faculty who are graduate students of Stanford.

This is their website:

Jim's post definitely aligns with ALU's model, especially in the five guiding ideas he mentions - thanks for sharing!


Sonia commented on Biosand Filtration

Hi Simon!

Thanks for your comment. One of the design restrictions that we had on the biosand filter designs that we were implementing as an engineering team in the rural mountain community of Jamaica was to limit our resources to materials that would be accessible to the community from their local hardware store or community supply collection so that our designs would be sustainable. Like you suggested, for our larger biosand filter designs, we used a 32-gallon, round, plastic garbage bin to function as casing that was readily used in the community and available at their hardware store. The metal screens required for the filtering layers may be a more difficult material to acquire, in addition to the sand and gravel needed for the filtering process, but the screens, at least, could be repurposed from chicken wire or door screens found in the slums.

I like the concept of creating a street/zone level hub of filters, especially as a central space for training. That would significantly enhance the sustainability of the design and wold be a great education space.

Thanks for all of your input! I appreciate it.


Sonia commented on Biosand Filtration

Wow - how cool! Thank you so much!