Have you ever heard of the forensic science theory known as Locard’s Exchange Principle? Named after the "Sherlock Holmes of France," the French criminologist Emile Locard, this theory sugge...
In the crypt of the Capitol, there hangs a bronze plaque commemorating the inventor of telegraphy, Samuel Morse…In 1825, Morse returned to Washington to paint a portrait of the Marquis de Lafayette, t...