Mystery in New York’s sewers: Groups of people recorded entering and exiting manholes (videos)
It remains unclear whether the same group is behind all the incidents
The mystery of the deaths of scientists in the US continues: A lab worker is found dead a year after her disappearance
The discovery of the body of a Los Alamos National Laboratory worker nearly a year after she disappeared rekindles questions surrounding a series of mysterious deaths and disappearances of scientists in the United States
Mystery of the “liquid cement” in Kypseli solved: It is a special foam with chemicals, explains Metro company
As stated in a press release by Elliniko Metro, the phenomenon is not connected to any safety issue nor does it cause permanent pollution