Lucy showed that members of the human family existed beyond three million years ago, and she also provided a template for fitting together later bone discoveries. The amount of information that can be gleaned from the bones has allowed some highly detailed theories about Lucy's life. A slightly deformed vertebra, for instance, "means she probably had back problems", said Melaku. #science https://www.sciencealert.com/lucy-is-50-how-a-bombshell-1974-discovery-redefined-human-origins