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Observations

3.3-Million-Year-Old Baby Shows Lucy’s Species Hung Out in Trees

Selam, a juvenile Australopithecus afarensis specimen

The advent of upright walking was a really big deal in human evolution. Scientists have posited that it allowed our ancestors to see above the savanna grass (the better to spot predators and prey), to carry tools and food and babies, to travel long distances more efficiently and to better strut their stuff for potential [...]

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