Renew your body

Of late I have come across these three interesting news concerned with
renewing the human body :

Baldness : Hair loss in humans might be reversible, suggest scientists who have helped create new hair cells on the skin of mice.

Artifical Limbs : Japanese firm unveils artificial hand with 'air muscles'.

Lasik Surgery : I don't have the hyperlink but read in yesterday's TOI that Lasik
surgery for eyes sans blade is available in India now.