The sinking of the passenger liner Titanic in 1912 has mesmerized generations. It was so intriguing to NOAA maritime archaeologist James Delgado, he eventually led the hunt in 2010 to get answers about what happened when the Titanic hit an iceberg and sank a century ago.

Using 21st century technology, Delgado, 56, was the chief scientist on the ship that monitored robots diving, photographing and collecting data at the bottom of the sea with high-tech tools to develop an electronic archaeological site map that will be completed by next year. Keep reading →