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The Median Artery, Which Forms Early From Birth To Feed Our Growing Hands, And Then Regresses In About 8 Weeks, Is Now Said To Be More Prevalent In Adults, Increasing From 10% In Folks Born In The Mid-1880s To 30% In Folks Born In Late 20th Century. This 3 Times Increase In Adults Today Is Likely Evidence Of Continued Human Evolution.

https://www.sciencealert.com/more-of-us-are-growing-an-additional-artery-in-our-arm-showing-we-re-still-evolving

Picturing how our species might appear in the far future often invites wild speculation over stand-out features such as height, brain size, and skin complexion. Yet subtle shifts in our anatomy today demonstrate how unpredictable evolution can be.