
Leading scientists discuss their work and the larger questions of humankind's existence.
James Delgado, director of the Maritime Heritage Program at NOAA, delves into the topic of ownership when it comes to the RMS Titanic and artifacts worth millions of dollars that lie at the bottom of the ocean.
James Delgado, director of the Maritime Heritage Program at NOAA, journeys miles underwater to provide a look at the RMS Titanic wreck.
Lisa Randall, theoretical physicist and leading particle and cosmology expert, explores one of physics' greatest mysteries: dark matter.