Massive river of molten iron found flowing in Earth's core
December 27, 2016, 6:58 p.m. by Bryan Nelson
Scientists don't know why it's speeding up.
Italy's deadly supervolcano is readying itself for another eruption
December 27, 2016, 10:52 a.m. by Jaymi Heimbuch
Campi Flegrei — which translates to 'the burning fields' — has had 2 major, catastrophic eruptions in its history. Now, it's showing signs of reawakening.
Hundreds of ancient human footprints found near volcano
October 13, 2016, 11:21 a.m. by Mary Jo DiLonardo
Tracks give snapshot of life in Africa maybe 19,000 years ago.