Global quandary: How to feed a growing planet

By Jack Chang | McClatchy Newspapers

In the lakeside capital of the central African country of Burundi, 40-year-old Lucie Nahimana on Thursday fed her family of six "black flour," a low-quality cassava root that many here have resorted to eating because they can't afford anything else.

Thousands of miles away, in the port city of Tianjin, China, physician Ning Aimin scanned the shelves of her supermarket for yogurt, a food that was practically unheard-of here a decade ago but has become a favorite of many of China's newly affluent.