When anthropologists tallied the use of emotional words through a century of literature, they included many books without clear emotional content — technical manuals, for example, and automotive repair guides.
Notice anything unusual about this lung scan? Harvard researchers found that 83 percent of radiologists didn't notice the gorilla in the top right portion of this image.
Trafton Drew and Jeremy Wolfe
Could you say "no" to this face? Christoph Bartneck of the University of Canterbury in New Zealand recently tested whether humans could end the life of a robot as it pleaded for survival.
A Hare Krishna distributes food gifts from a chariot during a festival in London in 2011. The religious group began distributing books, flowers and gifts to strangers in the 1970s, drawing on the rule of reciprocation to raise money.
Matthew Lloyd/Getty Images
Jennifer Ruiz and her 2-year-old daughter, "Moo Moo," at a Red Cross shelter in Little Egg Harbor Township, N.J. Ruiz and her daughter evacuated from their home in Seaside Heights.
With the advent of radio and television, presidential charisma became a more important personality characteristic. Above, Franklin Delano Roosevelt, who is rated one of the most charismatic presidents; John F. Kennedy; Bill Clinton.