You’ve probably heard of palindromes. They’re strings of characters or words that read the same backward as they do forward. They’re words like "mom" and "dad" and names like "Hannah" or "Bob." They ...

This week, many Americans celebrated “palindrome week” -- a string of days in which the date is the same whether written forward or backward. For example, 9/10/19 is "91/01/9" backward -- if you take ...