The hunt is on for the last slave ship to arrive in the U.S.

Archaeologists are analyzing data from a survey of Alabama’s Mobile River, looking for the Clotilda, the last known slave ship to arrive in America. The ship's survivors were enslaved for a few years before forming a unique community, Africatown. Clotilda descendants say its discovery would highlight their ancestors' story of strength and survival. NewsHour Weekend's Megan Thompson reports.