Now Playing: 09-26-12 Marketplace

Want a sure fire way to see the markets take a tumble? Start with street protests, mix in riot police... and toss a few Molotov
cocktails in for good measure. U.S., European and Asian markets have all been shaken by more anti-austerity protests in the eurozone. In the latest installment of our "Food for 9 Billion" series, we take a trip to rural Africa, where multinational supermarket chains are racing to serve new customers. Will these new supermarkets be a blessing or a curse for Africa's small farmers? Plus, we explore why CEOs are predicting a glass-half-empty economy and wonder how to spend the $7 billion we found buried near Baton Rouge.