The settlement occupants left an abundant and continuous record of seeds, legumes and other foods...By studying these archaeological layers, Professor Kennett and colleagues were able to discern the types of plants that were being collected in the warmer, humid days before the climate changed and in the cooler, drier days after the onset of what we know now as the Younger Dryas cool period.Before the impact, the inhabitants' prehistoric diet involved wild legumes and wild-type grains, and small but significant amounts of wild fruits and berries.In the layers corresponding to the time after cooling, fruits and berries disappeared and their...