Mysterious loud booms heard across the world: Report
The boom has left experts stumped, with suggested causes ranging from supersonic aircrafts to meteors exploding in the atmosphere.
Nov 24, 2017, 16:13 PM IST
Mysterious high-pitched tone keeps Oregon residents up at night
An unexplained high-pitched tone has kept residents of a Portland suburb awake at night for at least a week, confounding the best efforts of police and firefighters to pinpoint its source, officials in the community said on Monday.
Feb 23, 2016, 11:50 AM IST