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NASA has already recorded bursts of radiation from the Sun that could kill a human, but that was in 1972 and would only hit astronauts in orbit.

The asteroid's strange orbit may be the work of the gravity of an unknown planet.

A Polish diplomat and amateur historian would have found a long-lost ancient city that professional archaeologists and historians have been searching for for two centuries.

The southern Amazon was covered in a network of large villages and ceremonial centers before Europeans arrived.

The Ksar Draa is a mysterious building lost in the dunes of the Sahara desert.

Sailors, military, fishermen, divers, travelers and oceanographers have reported stories about humanoid creatures that live in oceans, rivers and lakes.

Abu Simbel Temple is illuminated by the sun for 20 minutes, presenting visitors with a rare phenomenon that only happens twice a year.

Drawings discovered in Peru would have been made more than 2000 years ago.