A new archaeological study on underground passageways in Saudi Arabia has shed new light on ancient human activity.

The Fagradalsfjall volcano was active from March to September 2021. NTNU professor Fjóla Guðrun Sigtryggsdóttir is shown studying the lava that had begun to flow over a defensive barrier near one of ...

By listening to the echoes of "marsquakes" — seismic waves rippling through Mars ' crust — researchers uncovered signs of ...

From orbit, Emi Koussi’s dramatic caldera and lava-scarred slopes hint at its fiery past, while dried lakebeds and erosion ...

These lava fountains have fed lava flows, some more extensive than others ... Sulfur dioxide emission rates are elevated in the summit region during active eruption episodes.

As of 1:32 p.m., USGS reported that fountains reached over 500 feet high. The lava flows continue to spread across the floor of Halema’uma’u crater. Episode 21 was preceded by 4 hours and 45 ...

While the eruption was ongoing, large-scale field experiments were conducted to build defensive earthen barriers aimed at slowing down the molten lava flow. Building defensive ... to work in close ...

The biggest stories of the day delivered to your inbox.

Plan Ahead: The waters here are too rough and rocky to enjoy swimming, and the black sand can get very hot. But that's not the main reason to visit Punalu'u. This beach in southern Hawai'i ...