Watch the warning sirens sound as a dangerous pyroclastic flow races down Indonesia's Mount Semeru. The dramatic footage captures one of the volcano's most hazardous eruptions, with scorching clouds ...

Sirens sounded as Semeru Volcano in Indonesia sent a fast-moving pyroclastic flow down its southeastern flank, highlighting ...

Avalanches of ash, gas and rock that cascade downhill during volcanic eruptions may be even more dangerous than scientists had realized. Pulses of high pressure form within these slides, known as ...

After an eruption, DIY cushions of gas help searing torrents of gas, ash, and rock spread miles from their source within a matter of minutes. ByKatherine J. Wu Monday, April 8, 2019 NOVA NextNOVA Next ...

Dumping literal tons of hot volcanic material down a lab flume may finally have revealed how searing mixtures of hot gas and rock travel so far from volcanic eruptions. These pyroclastic flows can ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists have discovered that the scorching material spewed from a ...