✙ ☪ ◊?

The addition of a third protective symbol (fourth, if you count this happy lion) will allow the Magen David Adom of Israel to join the Federation of Red Cross and Red Crescent Societies after over 50 years. It might look odd, but a lot of other symbols we take for granted have interesting recent origins. ☮ was designed in 1958. ☣ was created by Dow in 1966. ☢ first appeared as a doodle in the 1940s. The symbols of the planets have many origins, but here on earth, the origins of ☺ remain so convoluted that it might take a fictional "symbologist" to sort it all out.