What was once garbage – bits of glass, such as soda bottles, that have washed up on beaches – has been transformed by nature into sea glass, a precious item that is often transformed once again by humans into jewelry and decorative art.

Join “CBS Sunday Morning” on the hunt for rescued art, sunken treasures and prized gems.

Devotional objects made of gold and gems, donated over the past five centuries to honor San Gennaro, the patron saint of Naples, are kept in a vault-like museum in the southern Italian city.

In this historical documentary, Bettany Hughes gives her top 10 Egyptian treasures and must-see places in Egypt.

Archaeologist Agnes Hsu-Tang, director of New York-based China Institute, goes on a quest to answer three of ancient China’s most beguiling mysteries.