Please kindly SUBSCRIBE to support the publicity of this humble initiative. Prof. Hilonga is the pioneer of the visionary bottom-up movement in Tanzania called the GONGALI MODEL. He is the inventor of a low-cost water purification system (Nanofilter) that has won 22 awards, including WHO Award, Africa Prize for Engineering Innovation, and Pitch@Palace. You can read more about him at www.gongalimodel.com or visit his Inspire & Empower Centre: Nanofilter HOUSE www.nanofilterhouse.com