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Six big events of human evolution, in order bipedalism (6 MYA) nonhoning chewing (5.5 MYA) speech (2.5 MYA) material culture and tools (2.5 MYA) hunting (1 MYA) domesticated food (11,000 years) Data evidence gathered to help answer questions, solve problems, and fill gaps in scientific knowledge
Introduction to Human Evolution. Human evolution. Human evolution is the lengthy process of change by which people originated from apelike ancestors. Scientific evidence shows that the physical and behavioral traits shared by all people originated from apelike ancestors and evolved over a period of approximately six million years. One of the earliest defining human traits, bipedalism -- the ability to walk on two legs -- evolved over 4 million years ago.