Lava domes form at the top of many volcanoes when viscous lava erupts. When they become unstable, they can collapse and cause a hazard. An international team of researchers has analysed summit dome ...

If you’ve been following the ongoing eruption of Kilauea, you may have seen the terms “gas piston” or “gas pistoning” show up in some of the USGS Hawaiian Volcano Observatory updates, photo captions, ...

Add Yahoo as a preferred source to see more of our stories on Google. As of Wednesday morning, the lava spewing from the volcano was fewer than five miles away from the highway known as Saddle Road ...