Scientists have recorded the mysterious sound of the Earth deep underwater for the first time. The eerie hum could be key to understanding the makeup of the planet itself—but no one knows what makes ...

Far from the blaring cacophony of cities, towns and suburbs, there are far quieter soundtracks to be found -- the murmurs of wind rustling grasses, rushing waves tumbling onto beaches, the creaking of ...

Our blue planet spins suspended in outer space—and it hums, too. European researchers say the Earth's incessant hum originates from the bottom of the ocean. This study, published by researchers from ...