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What Makes us Human? By any measure, humans are an outlier species, albeit a very successful one. We dominate the planet and live in more sophisticated, complex societies than any other creature. All animals are unique, but humans are the most unique of all. Why? Dr. Donald Johanson, noted anthropologist and discoverer of the famous 3.2 million year old skeleton named Lucy (Australopithecus afarensis), whose discovery lead to the redrawing of our family tree, believes the time has come to define the e
