What on Earth?

Finding Vietnam's Lost POWs (2x1)

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In 1988 satellites spot what appears to be a downed aviator signal in Laos 15 years after the war in Vietnam ended; in 2005 an earth observation satellite see a fleet of large ships stranded in the middle of a vast desert miles from the Aral Sea in Kazakhstan; amateur archeologist search satellite images for ancient walls in Northern California that have the potential to rewrite American history; the global ozone monitoring experiment in 2014 sends back an image of a strange cloud covering over half of America; archeologist use google earth to answer questions about the placement of ancient temples in Lima, Peru.