Whole grains are more than just starch, containing up to 25% of other goodies, including protein, fiber, and added healthy omega-3's, along with a complex mixture of vitamins, minerals, and other micronutrients.

CNN: A family's guide to healthy food substitutes

The rebels are a complex mixture, including Rwandan troops, Tutsis from eastern Congo, remnants of the old army of Mobutu Sese Seko, the man deposed by Mr Kabila last year, and ex-supporters of Mr Kabila, both military and civilian.

ECONOMIST: War in the heart of Africa | The

Other solutions are more complex, but still cheap, such as injecting a sugary mixture into a water supply contaminated by hexavalent chromium to make it less toxic and less mobile underground.

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