The Bottom of the Sea is Stranger Than the Moon

Marine botanist Sylvia Earle. She's been described as one of the most intrepid divers in the history of underwater exploration. She's swum with humpback whales, explored the kelp forests off the coast of California, and dove into the trenches off the coasts of Hawaii where she once went to depths of 1,250 feet, which at the time was the deepest any human had dove without a connection to the surface.

Underwater explorer and photographer Jill Heinerth has dived into unmapped caves deep in the earth, and beneath a giant iceberg. She's seen hidden creatures old as dinosaurs, and witnessed scenes of surreal beauty. Her work is so dangerous, over a hundred of her friends and colleagues have died in caves. She talks about the risks and rewards of her work.

In the movie "Titanic," the band's last song is "Nearer My God To Thee." But Ian Whitcomb says it's not true. Whitcomb is an expert on early 20th century pop music. His new CD "Titanic" features some of the songs performed by the band on the Titanic, with the same arrangements they used.