Add Yahoo as a preferred source to see more of our stories on Google. Nathan Katcher memorized the design of the flags of 65 different countries. He taught himself how to play the piano using an app.

During family dinner, we have a tradition. Everyone has to summarize their day by describing three good events and, if necessary, one bad event. When my turn arrived at a recent dinner, I turned to my ...

Nathan Katcher memorized the design of the flags of 65 different countries. He taught himself how to play the piano using an app. He has five different versions of Monopoly and knows exactly how much ...