Feeling hungry? Maybe that’s because of all the news, from around the world, about food today — how much people produce, how much more they need, how much it’s going to cost, how much of an effect it will have on climate change, and vice versa. (..) There’s actually encouraging news on the food front from south Sudan, where citizens are voting now to become an independent nation. While much of Africa is under intense pressure to provide food for its people, the U.N. World Food Programme says south Sudan could become a food exporter and end its chronic food dependency within a decade. But immediately after the vote, this area is likely to need more food aid, according to the U.N.