Facebook researchers claim maintaining relationships via social media may enhance real-world friendships, which are proven to be good for one’s health.
Though it is unclear how directly social network connections translate to those in person, Facebook users appear 12 percent less likely to die than someone who has not used the medium. Additionally, Facebook collaborates with scientists and social psychologists to improve user experience, particularly during crisis or illness. According to Facebook, those with wide and diverse networks experience both health and emotional benefits. Read more.
Why do so many people vote in general elections? More importantly, why do so many of them choose to sport “I Voted” stickers?
According to Science, longer yawns may be associated with bigger brains. Researchers have discovered that smaller-brained animals with fewer neutrons in the cortex had shorter yawns than larger brained animals with more neurons. Primates, for example, tend to yawn longer than non-primates. The study supports a “long-held hypothesis that yawning has an important psychological effect.” 
Rudalevige in Washington Post: What Did Founding Fathers Think of the Press?