mbstone writes: Aside from ending painful daily fingerpricking for millions,the invention of the color-changing blood sugar tattoo should also reduce the vast amount spent on glucose test strips ($1/test). Next, I want to see artistic diabetic tattoos that morph according to the wearer's blood sugar.
Today's scientific question is: What in the world is electricity?
And where does it go after it leaves the toaster?
-- Dave Barry, "What is Electricity?"