When Benjamin Franklin invented his own harmonica, it became so popular in Europe that Mozart and Beethoven composed music for it.
Rebellion to Tyrants is Obedience to God was Benjamin Franklin's suggested motto for the Great Seal of the U.S.
In 1781, Benjamin Franklin attended a concert in which he narrowly escaped death when the opera house caught fire and burned.
Benjamin Franklin wrote "Fart Proudly", a scientific essay about farts.
Benjamin Franklin was an advocate of "air baths", during which he would spend up to an hour reading or writing in his house completely naked.
Benjamin Franklin made 8 voyages across the Atlantic Ocean and was the first to map the Gulf Stream.'
Benjamin Franklin invented the bifocals eyeglasses in 1784.
Benjamin Franklin had an illegitimate son who remained loyal to the British and fled to London after the war. He stayed there for the rest of his life.
Benjamin Franklin attempted to abolish slavery already in 1790.
Benjamin Franklin was one of the first people to manufacture playing cards in America.