US researchers say the shoulder was the key part of a throwing mechanism that evolved about two million years ago, enabling our puny forebears to capture prey with a projectile weapon.
The post Shoulder is key to evolutionary success appeared first on COSMOS magazine.
Source: http://www.cosmosmagazine.com/news/shoulder-is-key-to-evolutionary-success/
Jennifer Gimenez Jennifer Love Hewitt Jennifer Morrison Jennifer ODell Jennifer Scholle Jennifer Sky Jenny McCarthy Jessica Alba
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