A study by Dr. Peter Johanson, a psychologist at the University of Western Sydney, has found that "night owls" more commonly have the personality traits known as the Dark Triad. Unfortunately, while this sounds delightfully Harry Potter-related, it's just the three domineering forces of dickheadedness: specifically,…

Anyone who's ever had trouble sleeping has developed elaborate theories on how and why caffeine affects them. It's usually something along the lines of, "If I drink a cup of coffee after 11 a.m. on the third Tuesday of the month, I'll be up all night." But some new research is showing that the power caffeine holds…