Oncology & Cancer

Human skin begins tanning in seconds, and here's how

We all know that human skin tans after days spent in the sun. That relatively slow process has known links to ultraviolet (and specifically UVB) exposure, which leads to tanning only after it damages the DNA of skin cells. ...

Medical research

Better vaccines thanks to RNA

(Medical Xpress) -- Vaccination can be just as effective with dead bacteria as with live ones, as long as you inject them with the RNA of live bacteria. This finding was published in Nature by a team of American, French, ...

Psychology & Psychiatry

Q and A: Light therapy for seasonal affective disorder

DEAR MAYO CLINIC: Once daylight saving time ends, I find it difficult as it gets darker earlier. I also notice that I get a bit more depressed in the winter. My friend suggested a light box for seasonal affective disorder. ...

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