Just how humans evolved the stiff feet that allow us to walk and run has been something of a mystery, but now researchers say a bony arch structure is the key
Source:
https://www.newscientist.com/article/2235358-we-have-only-just-figured-out-how-human-feet-work/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home