Jan. 1 marks the dawn of a new era for Popeye and Tintin. It's the day the nonagenarian cartoon characters officially enter the U.S. public domain along with a treasure trove of other iconic works.

Jan. 1 marks the dawn of a new era for Popeye and Tintin. It’s the day the nonagenarian cartoon characters officially enter the U.S. public domain along with a treasure trove of other iconic works.