"In the year 1666, in the beautiful city of Florence, Italy, the court of Grand Duke Ferdinando II saw the arrival of a most unusual object--the partial remains of a great white shark!" That's a pretty cool opener for a middle reader biography, and Thomas Salerno's The Riddle of the Tongue-Stones: How Blessed Nicholas Steno … Continue reading The Riddle of the Tongue-Stones: How Blessed Nicolas Steno Uncovered the Hidden History of the Earth