Ash and lava spew from Indonesia's Mount Merapi, the country's most active volcano.

Scientists say Hawaii’s second-largest volcano is not erupting.

Plus, American skier Mikaela Shiffrin breaks the record for most World Cup wins.

Indonesia’s Mount Merapi has erupted with avalanches of searing gas clouds and lava, forcing authorities to halt tourism and mining activities on the slopes of the country’s most active volcano

A second volcano in remote Alaska is experiencing elevated earthquake activity, signaling an increased potential for eruption

Volcanoes are proving to be a hot commodity in the global race to transform to renewable energy

Snow sizzles when a local tosses it onto flowing lava at Mount Etna in Sicily.

Lava from Kilauea is spurting high into the air and spreading out across the Hawaii volcano’s summit crater floor

Last month, both Kilauea, one of the most active volcanos in the world, and Mauna Loa, the largest volcano in the world, ignited the landscape of Hawaii's Big Island.

Kilauea's volcano alert level has been elevated from “watch” to “warning” as eruption resumes on Hawaii's Big Island.

ABC News’ Linsey Davis spoke with filmmaker Rory Kennedy about her latest documentary, “The Volcano: Rescue From Whakaari” about a 2019 eruption that killed 22 off New Zealand’s coast.

The volcano's first eruption in nearly 40 years may soon end.

The goddess of fire is alive and well on Hawaii's Big Island, where two of the most famous volcanoes in the world are erupting at the same time.

The Hawaii National Guard has been activated to help residents who are affected by the erupting Mauna Loa.

Clouds of ash towered above Italy's Stromboli volcano this week as the crater erupted, emitting billows of smoke and lava.

Hawaii's long-dormant Mauna Loa volcano has continued erupting, spewing lava and ash into the air.

Mount Semeru killed 51 people when it erupted in December 2021.

Several villages surrounding Mount Semeru, Indonesia's tallest volcano, have been blanketed in ash and soot following its latest eruption.

Improved weather conditions have allowed rescuers to resume their search for possible victims after the highest volcano on Indonesia’s most densely populated island erupted, triggered by monsoon rains

Indonesia’s highest volcano on its most densely populated island has spewed ash skyward and released searing gas clouds and rivers of lava in its latest eruption

Many people on the Big Island of Hawaii are bracing for major upheaval if lava from Mauna Loa volcano blocks the quickest route connecting two sides of the island

Lava flow from the world’s largest volcano has significantly slowed down in the last 24 hours as the fire streams hit relatively flat ground.

Lava is heading toward the Daniel K. Inouye Highway on Hawaii's Big Island at a speed of nearly 1 mile per hour.

At the Yellowstone supervolcano, the magma reservoir under the caldera at Yellowstone National Park holds a lot more melt than scientists previously thought.

People in Hawaii are asking if anything can be done to stop or divert lava.

The lava erupting from Hawaiian volcano Mauna Loa, the world’s largest active volcano, is threatening a critical highway in the middle of the Big island.

The Mauna Loa volcano erupted on Sunday, spewing ash and lava on Hawaii's Big Island, the first eruption from the world's largest active volcano in almost 40 years.

Ash and lava have begun spewing out of the Mauna Loa volcano on Hawaii's Big Island -- the largest active volcano in the world.

Hawaii Gov.-elect Josh Green on how residents are staying safe as Mauna Loa erupts for the first time in 38 years.

Lava is shooting into the air and flowing downhill as Hawaii’s Mauna Loa volcano erupts for the first time in nearly 40 years

While there is no immediate threat to towns nearby, officials are warning residents to prepare for the worst.

Ash and lava began spewing out of Mauna Loa, the largest active volcano in the world, on Sunday for the first time in 40 years.

Hawaii's Mauna Loa, the world's largest active volcano, has begun erupting for the first time since 1984, ending its longest quiet period in recorded history.

The world’s largest active volcano is spewing ash and lava in Hawaii.

The world’s largest active volcano has started to erupt.

Mauna Loa, the largest active volcano on the planet, erupted late Sunday, casting a red glow in the skies over Hawaii's Big Island.

An underwater volcano that erupted on Jan. 15 in the Tongan archipelago in the South Pacific Ocean was the “largest ever recorded” with modern equipment.

The eruption reached record heights, breaking into the atmosphere’s mesosphere.

A volcano is likely erupting deep beneath the Pacific Ocean in the U.S. Commonwealth of the Northern Mariana Islands

Mauna Loa, the world's largest active volcano, is sending signals that it might erupt as it is in a state of heightened unrest, according to Hawaii officials.

Residents on Hawaii’s big island have been told by authorities to be on alert as officials watch for signs of possible eruption at the Mauna Loa volcano.

Iceland’s Fagradalsfjall volcano is putting on an impressive display, spewing lava from a fissure on the side of the mountain close to the country’s capital, Reykjavik.

Officials are telling people to stay away from the volcano, and there are some fears it might disrupt travel due to its proximity to the airport. So far, there has been no impact on travel.

A 4.6 magnitude earthquake was detected on the eastern side of the Fagradalsfjall volcano, the Icelandic Met Office reported Wednesday.

Icelandic volcano erupts amid series of earthquakes for the first time in a year.

An eruption of the Sakurajima volcano in Japan has raised emergency alerts and prompted evacuations for residents nearby.

The eruption Sunday forced nearby residents to evacuate.

A U.S. tourist fell into Mount Vesuvius after taking a selfie.

Culture and science are joining forces to preserve Maunakea.

ABC News’ Amy Robach explores the impact the Wolf volcano has on the environment and the wildlife in the area.