To transmit information during wartime, various industries used to encode their messages letter by letter with an elaborate system–a primitive version of today’s digital encryption. Grant breaks down some of those secret codes, and...
Words that are palindromes, but are also the same upside down as well, are called ambigrams. This is part of a complete episode. Transcript of “Ambigrams” We got a call from Brandy Noon here in San Diego. She spells her name N-O-O-N, and...