Online News Editor David Grimm shares stories on the influence of governmental corruption on the honesty of individuals, what happened when our ancestors cut back on the amount of time spent chewing food, and how plants use sand to grind herbivores‘ gears. Science’s International News Editor Rich Stone joins host Sarah Crespi to discuss his forensics story on how to track down the culprits after a nuclear detonation. [Image: Miroslav Boskov]