Secrets of Life - DVD

From Florida to the outback of Australia, domestic cats and their feral cousins are stalking some creatures to the brink of extinction. Discover what your cat is doing when it slips out of the house.

National Geographic visits unearthed Roman theaters, medieval streets, and secret tunnels, bringing new light to Florence's lesser-known, dark history. Art detective and National Geographic Fellow Maurizio Seracini reveals history using a thermocamera to reveal long-lost architectural layers in some of the city's most famous landmarks.

The saga surrounding Louis XIV's blue diamond is a web of intrigue, betrayal and a bizarre curse, spanning three centuries. First brought back from India, it was then stolen during the French Revolution. Later, in London, another diamond appeared -- slightly smaller but equally magnificent -- the Hope diamond. Is the Hope diamond a recut version of the mythical blue gem? Through the discovery of a lead replica of Louis XIV's stone, and