WTF?! Food dye can be found in a wide range of products on grocery stores' shelves, but scientists have recently put it to a novel use: making a mouse's skin temporarily transparent. Once the technique is refined to work on the thicker human epidermis, there are all sorts of applications where it can be used, from tattoo removal to early detection of skin cancer.
The bleeding edge? Swedish scientists may have found a radical nanotech solution to keep the heart beating when it runs into minor problems when healthcare isn't accessible. A newly developed injectable "heart stimulator" can temporarily correct arrhythmia by using your smartphone as a power source.
A hot potato: The US Surgeon General wants social media to carry the same kind of health warning labels as cigarettes and alcohol. Dr. Vivek Murthy has called on Congress to apply labels to the sites and apps that alert users to the potential mental health harms they cause.