Around 200,000 to 250,000 years ago in the grasslands of eastern and southern Africa, Homo Sapiens emerged from other human-like species before it. Human revolution occurred in Africa and also was where culture defined ways of living. There, human beings began to inhabit new environments like never before such as forests and deserts. Along with these movements, technological advancements with stone tools prevailed. Evidence of hunting and fishing marked a new phase in human food collecting, opposed to the primitive ways of scavenging dead animals. Settlements became planned around the seasonal movements of fish and game. After developing in Africa, human beings began their trek out about 100,000 to 60,000 years ago into Eurasia, Australia and the Americas. Migration first led into to the Middle East and from there they went westward into Asia. 20,000 years ago, cold Ice Age climates pushed humans southward in search of warmer climates where they then altered their fishing and hunting habits and developed new technology. Early human migration to Australia came from Indonesia and involved the use of boats, a first for humans. Over tens of thousands of years humans all over had developed about 250 languages.