The more than 100 pyramids scattered on the west bank of the Nile are miracles built by the ancient Egyptians about 4,500 years ago. The…

　　Hallucinations or somnambulism. 　　At 5 a.m. one day in 1979, Helen Hilotson was awakened by a knock on the door. She heard her mother Marjorie…

　　Recently, progress has been made in the bizarre disappearance of a family of four in Alaska. The police said that the family of four missing…

　　1.26 seconds is the time it takes for a beam of light to reach the earth from the moon. An hour consists of 60 minutes.…