The Zond center for the study of anomalous phenomena claims that Ukraine has seen an increase in UFO activity over recent years. ... Most sightings come from large cities with large populations, ufologists say. The Crimea is particularly famous for the number of observations, especially in summer time.
Researchers are not joking when they say UFO appearances over Ukraine may threaten its national security. ... In addition, UFOs may pose a direct threat to witnesses' health and safety. UFOs interacting with the environment sometimes produce distortions in biological life ... and leave noticeable environment effects. ...
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(Whew, what a relief!)