Young brown bears practice fighting while two older males put their skills to the test over a female.
(02:56)Officials confront a man traveling from Guyana to the U.S. carrying a suspicious package.
(02:10)Ken pushes hard to close the season, but pump issues leave Guillaume hanging by a thread.
(01:57)The expedition team finds a group of sharks and dive in for a closer look.
(03:14)Scientists exploring Puerto Rico's trenches discover volcanic rock formations deep underwater.
(02:55)One irritable patient gives Dr. Michelle Oakley a piece of her mind.
(02:56)Morgan Freeman sees the oldest written depiction of the afterlife inside a 4,000 year-old Egyptian Temple.
(02:21)Morgan Freeman and Executive Producers Lori McCreary and James Younger discuss what they learned about the Hindu belief of...
(01:14)We went to 22 countries around the world to ask everyday people from all walks of life one big question.
(03:04)Chief Arvol Looking Horse discusses his journey to becoming the sacred one at the tender age of 12.
(03:15)Morgan Freeman answers 20 thought-provoking questions, including "would you rather live on Earth or Mars" and "pineapple on...
(01:33)The wreck of a passenger freighter is discovered in the Gulf of Mexico, sunk by a Nazi U-boat in WW2.
(02:17)Baby male elephant Beco is introduced to Bull elephant Hank.
(02:37)A stunning, intimate and unflinching portrait of free solo climber Alex Honnold, as he prepares to achieve his lifelong dream:...
(02:22)The Moose Creek crew gears up to mine, but are missing one piece of the puzzle.
(02:13)Big Al, McGregor’s excavator, shuts down and his resident fix it man comes to his aid.
(01:44)Hunting alone is a difficult task and She Wolf needs to find some dinner that can’t attack.
(00:59)Phil Breslin must cross an icy river to get to his camp.
(01:48)Madagascar is home to over 50 different species of Chameleons.
(01:51)Funeral pyres line the banks of the Ganges River in Varanasi, the most sacred place for Hindus.
(02:08)