Most of the time, we're hearing reports from the medical/news community about the dangers of tattooing (hepatitis, keloids, staph infections, devalued real-estate, etc).  So it's always a nice refresher when we hear about the scientists out there who are looking at the dermal arts in a positive light.

While it's only been tested in lab mice (which is generally a good place to start), doctors are hoping to utilize a pigment that changes color depending on the subject's blood-glucose level.  What does that mean for you?  Well, if you're diabetic, it could mean an end to the endless finger-pricking associated with blood-sugar monitoring.

Or, ya know, you could just get a really bitchin mood-ring tattoo and have a great reply to those irritating inquiries regarding the "meaning" of your ink.

"It means I need a Snickers bar or, I'm going to punch the next motherfucker who asks me a dumb question."

Read more about it here.

[Photo courtesy of Draper Laboratories and thanks to Charlie A. for the tip!]