Studies have shown that up to 70% of all UFO sightings happen in so-called `hotspots' where reports of visions, mysterious lights and unusual phenomena are regularly witnessed--and not only in modern times, but dating back thousands of years.
More than 10,000 crop circle formations have been documented in over 50 countries, and many display properties that defy conventional explanations. Are they of otherworldly origin? And if so, what is their purpose?
The discovery of the ancient megalithic site of Karahan Tepe in southern Turkey turned the world of archaeology on its head, displaying engineering skills far beyond what the people of the time were thought to be capable of.
While mainstream scholars identify the towering obelisks of ancient Egypt as monuments to the pharaohs, others suggest they may have served a technological purpose.
The Mutual UFO Network--better known as MUFON--is the world's leading organization devoted to the scientific investigation of unidentified aerial phenomena and other unexplained encounters.
Meteor impacts have significantly altered our world, creating the perfect environment for the rise of humankind. But could new evidence reveal that celestial objects have been directed to Earth by an alien intelligence?