Volcanoes inspire awe with spectacular eruptions and incandescent rivers of lava, but often their deadliest hazard is what ...

I’m aware that ash travels farther, lasts longer and leaves deep scars. Volcanic ash forms when viscous magma – molten rock from deep beneath Earth’s surface – erupts, exploding into ...

But the potential impacts of that will pale in comparison to the largest volcanic eruption in the twentieth century, the 1912 Novarupta-Katmai eruption. Ash from that event over a century ago ...

Kilauea ash (top) was deposited where the bloom occurred. Credit: W. Cheah.

When you buy through links on our articles, Future and its syndication partners may earn a commission. During a field trip to the Lava Creek Tuff near Shell, Wyoming, scientists discovered ...

I’m aware that ash travels farther, lasts longer and leaves deep scars. Volcanic ash: What it is, and why it matters Volcanic ash forms when viscous magma – molten rock from deep beneath Earth ...