Here are some of the most interesting science news articles I read this week:
Biological clock found that can ID age of most human tissues
Learning new skills keeps an aging mind sharp
No known hominin is ancestor of Neanderthals and modern humans
Astronomers discover universe's most distant galaxy
One thousand exoplanets in two decades
Special Ops command seeks prototypes for "Iron Man Suit"
Hair regeneration method is first to induce new hair growth
We all came from Africa: hitchhiking virus proves it
(from YaleNews) Researchers rewrite an entire genome--and add a healthy twist
Enjoy your weekend, everyone, and come back Monday for a very special interview!