Editor’s Note: Subscribe to CNN Travel’s newsletter, Unlocking the World, for weekly updates on destinations, travel news, aviation tips, culinary highlights, and lodging suggestions. Ever wondered what it takes to channel your inner Jacques Cousteau and embark on a quest for hidden treasures? For Jon Collins-Black, this curiosity led to an extraordinary journey, inspiring him to hide five treasure chests scattered across the United States. His latest book, “There’s Treasure Inside,” invites