Documantry

National Geographic follows three pilgrims from Malaysia, South Africa, and the United States as the travel to Mecca for the hajj.

"Last Stand of the 300" is a 2007 special that tells the tale of when in 480 BCE, a small number of Greeks stood against the might of the Persian empire at Thermopylae.

Scientists are only now beginning to understand the most complex machine in the known universe - the brain. Go on a voyage of discovery into the evolutionary history of our last biological frontier. From early civilizations' attempts at neurosurgery to today's robotic laser surgery, revolutionary new techniques are finally unlocking the story of the brain. As a result, we've learned more in the last five years than in the past 100.

A homeless little boy responds with disbelief to a revelation made by his much older fellow homeless friend.