App developer, beekeeper and amateur astronomer who is based in rural Zambia. His apps include Pestmapp (a fast, easy and reliable way for smallholder farmers to control pests and plant diseases with images), BITKwacha Money (simple algorithms to bank and climate-insure the unbanked and undocumented), OpenGridMapp (a clean energy asset mapping tool for turn-key smart grid deployment) and Recyclebot (a zero-waste P2P waste recycling platform).