. >> howard buffett is the 69-year-old son of billionaire investor warren buffett who is getting much of his fortune to his children's charitable foundations. howard has focused substantially on food security. >> owns all the places we have worked where we have seen really got conflict, i can tell you that one denominator is people are not getting the food they need to get. >> in addition to unsettled conflict and weather, he says the conflict has few temperate zones ideal for stable crops and systems to transport, store, and market food are also insufficient. rwanda, with political instability, was a good place to start building a system, he says, but daunting nonetheless. >> most of the entire country is made up of small, local farmers. if we can get it right in rwanda, we can get it right anywhere. >> rwanda has a landmass about the size of new hampshire with up to 10 times the population, about 13 million people. despite progress that has been made at slowing the growth rates, the population is expected to double by 2015. >> not all of your students are going to become jobseekers.