Special white blood cells heal our wounds with jolt of energy
These cells, called macrophages, can both cause and alleviate pain
An aspirin a day might actually not keep the doctor away
Using aspirin to fight heart disease could, instead, have side effects like major bleeding
How do we measure pain, anyway?
You can't exactly ask a rat to point to where it hurts
A genetic mutation gave this woman a pain-free life, a sunny disposition, and the ability to eat Scotch Bonnet peppers
Her novel genetics point the way to new targets for pain relief
