[aortega]

Severe jaundice in newborns is treated with blue leds http://www.treehugger.com/clean-technology/leds-used-to-help...

Edit: LED lasers that enabled things like the Internet (Optical fibers often use DBF Lasers) were invented by Alferov and Kroemer that also shared the physics Nobel price in 2000.

[nsajko]

Cool. It works because bilirubin oxidises under blue light into a form more soluble in water. en.wikipedia.org/wiki/Neonatal_jaundice#Treatment