Ever wondered exactly how much your job is stressing you out? Scientists have developed a temporary forehead tattoo that ...

Please bleed more, I thought, looking at my pricked finger. A drop of blood dangled at its tip, not quite big enough to fall.

The Red Cross has a new way to test your hemoglobin levels that is prick-free. For the past four months, donation locations have tested iron levels using a noninvasive device called the Ora Sense.