An active volcano near Alaska's most populated city could be on the brink of eruption, according to scientists who are constantly monitoring a potential threat.

Taal Volcano had a minor phreatic eruption on Saturday, the Philippine Institute of Volcanology and Seismology (Phivolcs) ...

It's the seventh eruption since just before Christmas at one of the world's most active volcanoes, with lava shooting hundreds of metres into the sky. Take a look at these incredible pictures of ...

Experts have identified ashy layers at multiple Bolivian sites as tephra, a material produced by volcanic eruptions, that rained down on settlements near Lake Titicaca sometime between 400CE and ...

The ledge was covered with heavy ash, called tephra, and speckled with droplets of volcanic glass and delicate lava threads known as Pele's hair. The surface was warm; hiking pants left on a tent ...

Gas emissions and rock fragments ejected from the volcano into the air, known as tephra, were the primary hazards from the eruption, the observatory said. A few hours later, another observatory ...

The team analyzed volcanic ash, known as tephra, found trapped in Arctic ice cores taken from Greenland and Russia to link the period of unexplained extreme climate in the Mediterranean with the ...

Tephra is a general term for fragments of volcanic rock and lava that are blasted into the air by explosions or carried upward by hot gases. Tephra includes large, dense chunks, light rock debris ...

Above the havoc, a cloud of volcanic steam and ash rose 30,000 feet. Eruptions of steam, ash, and tephra continued until June 1917, when the volcano resumed its quiet profile, with minor steam ...

Volcanic activity in Iceland, monitored by the Iceland Metrological Office, has hazards similar to those in Hawaii: earthquakes, opening of new fissure systems, lava flows, tephra fall ...

“Volcano Watch” is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory ...

The USGS Hawaiian Volcano Observatory spearheads Volcano Awareness Month each January on the Island of Hawaii. This year, in addition to in-person talks and walks around the island, we hosted an art ...