The warming of the planet that began around 10,000 BC forced humans to adapt, and they did so with great ingenuity. Many of the larger animals people had feasted on during the Ice Age died out as a result of global warming and over-hunting. At the same time, edible plants flourished in places that had once been too cold or dry to support them. Based on the behaviour of hunter-gatherers in recent times, women did much of the gathering in ancient times and probably used their knowledge of plants to domesticate wheat, barley, rice, corn, and other cereals. This allowed groups who had once wandered in search of sustenance to settle in one place.