One of the events at Slow Food Nation is what photographers Faith D'Alusio and Peter Menzel call a "culinary atlas of the planet at a time of extraordinary change." They traveled to 24 countries and visited 30 families to document exactly what the families ate. Each family posed around a week's worth of food. The photos are on exhibit here at the World Affairs Council. Many are also in a book called Hungry Planet: What the World Eats. The Allegheny Front spoke with D'Alusio about their work.