The chaos punctuated by heavy Israeli fire that killed 115 people trying to get bags of flour from an aid convoy is a sign of the desperation of the hundreds of thousands of Palestinians struggling to survive in northern Gaza. International aid officials say the region is devastated by catastrophic hunger. Residents say they have taken to searching piles of rubble and garbage for anything to feed their children. Many families have begun mixing animal and bird food with grain to bake bread. Aid officials warn that famine is imminent if nothing changes.