Humans are evolving an extra artery in the arm - BBC Science Focus Magazine
www.sciencefocus.com
A new study suggests that humans are evolving at a faster rate than at any point in the past 250 years.
The original post: /r/todayilearned by /u/-Docta-G- on 2025-01-18 16:03:53.

Original Title: TIL that in utero, a third artery temporarily runs down the arm to help with the development of the hand. By 8 weeks after birth, this artery usually disappears. For unknown reasons, people are retaining this artery as adults, and it’s now three times as prevalent as it was 100 years ago