Nacre, also known as mother-of-pearl, is the iridescent substance that forms the shell lining of some fresh-water and salt-water mollusks. Just like the pearl, it is a mantle tissue secretion and is composed of alternating layers of calcium carbonate and conchiolin. It serves to both smooth the shell and defend it against parasitic organisms and damaging debris. Its iridescent beauty makes it a popular ornamentation in jewelry, watches and guitar inlays. What other decorative uses does it have?
Back in the day
Leo Frank was a Jewish American factory manager who was accused of raping and murdering his employee, 12-year-old Mary Phagan. Frank was convicted, despite evidence incriminating a janitor at the factory, but his death sentence was commuted when further evidence called his guilt into question. A group with ties to the Ku Klux Klan then kidnapped and lynched Frank in a highly publicized event that turned the spotlight on anti-Semitism in the US and led to the founding of what organization?
Born on a day like today
Goldwyn was a Polish-born American film producer. He founded his own film company, which later merged with others to form Metro-Goldwyn-Mayer (MGM), and in 1946, he received the Irving G. Thalberg Memorial Award. Goldwyn is said to have had an explosive temper that left him with few close friends. When a former colleague died, Goldwyn allegedly declared, "The reason so many people turned up at his funeral is that they wanted to make sure he was dead." Whose passing prompted this statement?