This is about a connection from one mountain town to another, 10 time zones apart. In the highlands of Rwanda, the terrain and the economy rule out access to well water. If communities could afford to tap an aquifer, they'd be unlikely to have the money to maintain the infrastructure that would deliver the water. Technology to purify water has to be more efficient than boiling over a wood fire, and at the same time must be sustainable in a remote area of a country where the gross national income per capita is about $1,300.
展开▼
