David Ray(Photo: Special to the Register) As food system leaders gather in Iowa for the Borlaug Dialogue and the awarding of the World Food Prize, 795 million people around the world continue to suffer from chronic hunger. More than 161 million children under the age of 5 are stunted, and climate change impacts loom large over small-scale food producers worldwide. Danielle Nierenberg (Photo: Special to the Register) While Dialogue attendees will…