National Geographic Channel Explorer

Sex tourism may be one of Thailand's most profitable industries. Many of the foreign men who enter the country as tourists come for sex the demand is high, and the market is massive.

R.O. Davidson tries to convince the Confederate War department to finance his flying machine.

Watch as a handful of the most hard-core Civil War reenactors, eat, sleep and breathe the gun smoke of history.

According to Snake Hunter and Herpetologist Zoltan Takacs "There isn't another country in the world where snakes and humans get so close as in Vietnam" and he and Environmental Anthropologist and Cave Diver Kenny Broad are out to prove it.

Theologian and relic expert Candida Moss journeys to a remote island in the Black Sea to investigate the ruins of one of the oldest monasteries in Europe.

Before the church ... before the Gospels ... before the word "Christian," there were the Apostles. This is their story.

A wide-ranging investigation of animal die-offs, including the thousands of blackbirds that died in Arkansas on New Year's Eve, 2010, leads to an exploration of how the human mind is inspired, or derailed, by seeming patterns or coincidences in nature.

Using the wealth, culture and seized bounty of Mexican drug traffickers - narco bling - as a jumping off point, correspondent Mariana van Zeller explores the strange and dangerous netherworld of the largest and most successful of the Mexican drug cartels, led by one of the world's most wanted criminals.

Scientist and art enthusiast Maurizio Seracini is on a quest to find Leonardo da Vinci's "The Battle of Anghiari", which vanished 500 years ago.