There are rules as to who can appear on U.S. money and who can't. It is why these presidents are the most recent to appear on any form of U.S. currency.

Today in History for Jan. 8: In 1324, explorer Marco Polo died at age 70. In 1438, the Orthodox and Roman Catholic churches met at the Council of Ferrara-Florence in an effort to form an alliance that ...

Unfortunately, not everyone has managed to come out unscathed from fans who've obsessed over celebrities. Some instances have ...