Princess Diana was a beloved member of the British royal family, but her unhappy marriage to Prince Charles eventually led to her death in a car accident. In November 1995, Diana gave a candid interview with Martin Bashir in which she revealed intimate details about royal life, her own infidelity, and the end of her marriage. The interview made history for its honesty and was conducted in secrecy. Meanwhile, two years after the interview, James L. Haven and Charles Hettrick patented the yo-yo on November 20, 1866. The yo-yo was originally called “Whirligig” before taking on its current name. On the same day in 1923, Garrett Morgan received a patent for his invention of a three-command traffic sign that would later become the modern traffic light. His invention added a third option – “Warning” (yellow light) – to regulate traffic more safely.