What on Earth?

A possible sighting of Noah's Ark; the face of Jesus in a Hungarian field; and God's wrath captured in action.

Possible clues to the location of El Dorado, the legendary city of gold, are studied.

American stealth technology inside China; apparent signs from lost veterans in Vietnam; a blood-red lake in Iraq.

Strange spiral markings in an African desert; a fleet of ships stranded in the middle of a desert; and huge arrows in the Badlands of the American west.

A possible sighting of Genghis Khan's lost tomb; dead patches in the desert; and the world's oldest and strangest lakes.

Strange sightings in the Bermuda Triangle; and a massive tsunami that disappeared.

A blood trail spurs a satellite investigation. Also: strange spirals in the Kalahari Desert; and a bizarre pattern off the South Korean coast.