BOX CLEVER: A LifeBank employee makes a delivery to a hospital in Lagos, Nigeria. Only 43 percent of the 185,000 pints of blood required each year in the city are collected; LifeBank aims to move 9,000 pints in 2017.
J. PERDIGÓ & C. ALDEHUELA FOR NEWSWEEK; ADEOLA OLAGUNJU FOR NEWSWEEK