Man-made islands can remove ammonia, heavy metals, and other chemicals from the water.
Governor Jon Huntsman of Utah is a Republican moderate and China expert seen as a possible presidential candidate.
Security forces were mobilized for the first time since 2006 as violence escalates – two people died in street clashes Monday.
As attacks continue, experts consider whether deadly force would be an effective deterrent.
Jeff Gasana's goal is to make his award-winning company the leading cellphone-banking service in East Africa.
It charged the son of a former leader with laundering kickbacks and is investigating other prominent figures.