The global "hum" of the Earth is now helping scientists probe the planet's deep interior, a group of researchers say. Since this hum — called seismic noise, which is generated by sources such as storm ...

The most dangerous volcanoes in the world can be deadly, but they rarely muster up the sheer sound that could burst eardrums. This one did, though. On 27 August 1883, a volcano named Krakatoa, nestled ...