In Laos, years after the end of the VietNam war, U.S. airmen missing in action were still laying out signs appealing for rescue from a country in which they intruded covertly. A fleet of big ships was stranded in the the Kazakhstan desert near a site used to develop biological weapons. Walls stretching across Northern California can't be explained. A satellite searching for ozone and other pollutants finds a haze covering a large part of North America, which, though not seen before, is simply explained when the same instruments are used at ground level. Raised ground found in 2012 on Google Earth from four thousand years ago in Peru seems not to belong to temples but related to a major climatic feature of the region, but why?

Meteorologists decide that a rapidly changing cloud over Alabama is more sinister than most weather. A massive construction is discovered extending under the Urals. Much smaller holes peppering an archaeological site in Syria result from scheming by Islamic State. Missing American stealth technology turns up deep inside China. A shape discovered on Apple Maps appears to be a massive creature lurking under Loch Ness. A geometric shape in the Afghan desert looks like a defensive military position, but whose?

A black blob appears in the sea near the Florida Keys. A possible murder is photographed near Amsterdam. Spiral markings in the desert of southern Africa could point to an ancient city. A huge gravitational anomaly is found in Antarctica. Meteorologists speculate on bright bands near a brief flash of light in unpopulated territory.

Sixty feet long arrows discovered in the Nevada wilderness in May 2014 turn out when viewed from above to spread across multiple states and have a recent lifesaving origin. That August in the contested waters of the South China Sea an island fit for a James Bond super-villain suddenly appears. Meanwhile, a helicopter flying over the Siberian tundra finds a round hole like another then found by herders and more by satellites, but how were they formed? In November 2000 a blood-red waterfall whose origins, revealed by a radar scan, could be like features on Europa is found by a satellite measuring glaciers in Antarctica. In 2011 in the desert five hundred miles south of Tripoli the 1,400 feet by 500 feet outlines of a settlement could reveal a Gaddafi weapons base, but closer inspection indicates more ancient origins. A 2005 telephone call to an Albuquerque television reporter leads her to miles of fences 150 miles north of Roswell protecting extensive and puzzling features shown on ...

The face of Christ is found in a field in Hungary. A photo that claims to show who shot down a passenger jet in Ukraine. A sinister shape in the mountains of Afghanistan that leads investigators to a hidden genocide. Just what on earth are they?

A strange structure is found in the heartlands of Mongolia. Is it the lost tomb of Genghis Khan? Bizarre rings in Spain could lead to the lost city of Atlantis. A huge floating island is on a collision course with New Zealand. Just what on earth are they?

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A young boy makes international headlines when he uses satellite images to discover lost cities of the Maya. Satellite images might point to a modern-day genocide. Trees in China seem to be spelling out a sinister message.

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