5, 2014 at 12:48 p.m. PT James Franco showed off a tattoo of Elizabeth Taylor and Montgomery Clift on the back of his recently shaved head. But don't worry, it's only temporary. The eccentric ...

Analysing brainwaves could be made easier by printing a temporary tattoo onto a person’s head. Electroencephalography (EEG) is a way of measuring electrical activity in the brain via electrodes ...