This foot bone, the fourth metatarsal, connects the heel to the fourth toe. The 3 million-year-old fossil suggests that Australopithecus — Lucy and her kind — could have been the first upright walkers.
Carol Ward and Elizabeth Harman/Science/AAAS
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"Music is the only thing that I truly know how to do and enjoy doing," says Jessica Lea Mayfield, whose new album is called Tell Me.
Courtesy of Nonesuch Records
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