A group of seven villagers went missing in the caves after flash flooding.

Engine knock is not a single problem — there are at least four distinct types, each with a different cause and a different level of urgency. The pinging sound that appears only under hard acceleration ...

See more of our coverage in your search results. Add The New York Post on Google The mysterious knocking sounds heard beneath the Atlantic Ocean that gave false hope that the Titan submersible and its ...

China's inaugural astronaut returned to Earth with an extraordinary account after encountering a puzzling 'knocking sound' that left space engineers completely stumped. Taikonaut Yang Liwei launched ...