Both can cause widespread human and ecological devastation. But picking a winner in a destruction derby is a tough call.
All of Iceland's airports remain open, though the airspace over the eruption site is closed.
Iceland has warned that its largest volcano is in danger of erupting, four years after millions of air travelers were grounded by a huge ash cloud from another peak.
Japan's devastating 9.0 earthquake in 2011 has dangerously increased the pressure beneath Mount Fuji, an active volcano. Continue reading →
The volcano's supply of semi-molten rock, or magma, starts 50 miles below the Earth. Continue reading →
If you're not feeling the heat in Brazil, maybe it's time to weigh in on a more explosive competition.
A satellite orbiting six miles above the Congo could warn a million nearby residents of an eruption. Continue reading →
A newly discovered underwater peak, called Ka'ena volcano, brings Oahu island's volcano count to three, up from two.
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